{"id":12464,"date":"2026-10-23T05:00:00","date_gmt":"2026-10-23T05:00:00","guid":{"rendered":"https:\/\/bioprofile.com\/?page_id=12464"},"modified":"2026-11-05T21:06:16","modified_gmt":"2026-11-05T21:06:16","slug":"rheumafaktor","status":"publish","type":"page","link":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/","title":{"rendered":"Rheumafaktor"},"content":{"rendered":"\n<div id=\"content\" tabindex=\"-1\"><\/div>\n<style>@import url('https:\/\/fonts.googleapis.com\/css2?family=Poppins:ital,wght@0,400;0,600;0,700;0,800;1,400&display=swap');\n\/* ===========================================================================\n   BioProfile advertorial, the design Jesse approved on 2026-07-30, expressed\n   as a WordPress design system.\n\n   THE @import IS LOAD BEARING and must stay the first thing in this sheet (a\n   CSS @import after any rule is dropped by the parser). elementor_canvas does\n   not enqueue the theme's fonts, so without it the whole page falls back to the\n   system font. Caught by LOOKING at the live page on 2026-07-30, right after\n   the template was switched to canvas.\n\n   Everything is scoped to `.bp-adv`, so nothing here can reach the rest of\n   bioprofile.com, and core blocks are styled BY ELEMENT so a heading, a\n   paragraph, a quote, a list, an image or a button inserted by hand inside the\n   advertorial comes out on-design with no class to remember.\n\n   Jesse's design feedback, 2026-07-29 23:38, point by point:\n   1. the light green and the dark green are the preferred colours; grey may be\n      used but the page must NOT open grey;\n   2. more colour and variation across sections, e.g. a colour block on the left\n      or the right side of a section, without overdesign;\n   3. ONE H1, plain text on white; everything else H2 or H3; an H2 may carry its\n      own background colour so the page can be read from the headings alone; an\n      H3 keeps its section background and gets a bigger font size;\n   4. reuse the results page design feel;\n   5. Written by \/ Verified by, the placeholder blocks and noindex stay.\n\n   COLOUR PROVENANCE. Not one hex is invented.\n   - #b7cb32  LIGHT GREEN, brand manual \"colours rejuvenation protocol\"\n              (R183 G203 B51). Same value as --bp-lime in\n              brands\/bioprofile\/brand\/tokens.md.\n   - #006b62  DARK GREEN, brand manual, nourish the cells (R0 G107 B98).\n   - #005859  brand manual primary teal, the value the brand is built on.\n   - #228a62  brand manual, challenge the body (R34 G138 B98).\n   - #7ca64c  brand manual, calm the mind (R124 G166 B76).\n   - #dbd4cd  brand manual \"additional color\", the warm neutral.\n   - #B7CB3329 is the brand token --bp-lime-soft (light green at 16 percent).\n   - the gradients are the brand token layer's own, copied verbatim.\n\n   SPECIFICITY NOTE. Elementor's global kit emits `.elementor-kit-6 h2` style\n   rules at (0,1,1). Element rules below are written `.bp-adv h2`, also (0,1,1),\n   and win on source order because this sheet is inline in the body while the\n   kit is a <link> in the head. Component rules that MUST NOT lose carry two\n   classes, e.g. `.bp-adv .wp-block-button__link`.\n\n   LAYOUT NOTE. Vertical rhythm uses `margin-block` and never the `margin`\n   shorthand, so the measure rule `.bp-adv-sec > * { margin-inline: auto }` can\n   centre a block without being outranked by its own element rule.\n   =========================================================================== *\/\n\n.bp-adv {\n  --bp-ink: #212527;\n  --bp-teal: #005859;\n  --bp-forest: #006B62;\n  --bp-emerald: #228A62;\n  --bp-olive: #7CA64C;\n  --bp-lime: #B7CB33;\n  --bp-lime-soft: #B7CB3329;\n  --bp-sand: #DBD4CB;\n  --bp-white: #FFFFFF;\n  --bp-foot: #6b6b6b;\n  --bp-grad-dark: linear-gradient(237deg, rgba(0,88,89,0.00) 62.94%, #005859 100%), linear-gradient(90deg, rgba(34,138,98,0.00) 40%, #228A62 100%), #006B62;\n  --bp-grad-lime: linear-gradient(110deg, rgba(183,203,51,0.00) 36.06%, rgba(183,203,51,0.25) 97.65%), #FFFFFF;\n  --bp-font: 'Poppins','Segoe UI',Arial,sans-serif;\n  --bp-fs-h1: 44px; --bp-fs-h2: 31px; --bp-fs-h3: 24px; --bp-fs-pre: 15px;\n  --bp-fs-body: 17px; --bp-fs-small: 14px; --bp-fs-foot: 13px; --bp-fs-btn: 17px;\n  --bp-lh-body: 1.75;\n  --bp-s-1: 4px; --bp-s-2: 8px; --bp-s-3: 12px; --bp-s-4: 16px;\n  --bp-s-5: 24px; --bp-s-6: 32px; --bp-s-7: 44px; --bp-s-8: 72px;\n  --bp-measure: 760px; --bp-side: 40px;\n  --bp-radius-photo: 16px; --bp-radius-btn: 10px; --bp-radius-card: 20px;\n  --bp-shadow: 0 10px 30px rgba(0,88,89,0.10);\n  font-family: var(--bp-font);\n  font-size: var(--bp-fs-body);\n  line-height: var(--bp-lh-body);\n  color: var(--bp-ink);\n  background: var(--bp-white);\n  -webkit-font-smoothing: antialiased;\n}\n.bp-adv, .bp-adv * { box-sizing: border-box; }\n.bp-adv p, .bp-adv li, .bp-adv h1, .bp-adv h2, .bp-adv h3, .bp-adv blockquote,\n.bp-adv a, .bp-adv cite, .bp-adv span { overflow-wrap: break-word; min-width: 0; }\n\n\/* THE TOGGLE. One word in the block's own \"Additional CSS class(es)\" field\n   hides an optional component on the front end without deleting anything. *\/\n.bp-adv .bp-off { display: none !important; }\n\n\/* the page opens on green, never on grey (his point 1) *\/\n.bp-adv .bp-adv-rule {\n  height: 6px; border: 0; margin-block: 0; max-width: none;\n  background: linear-gradient(90deg, #005859 0%, #006B62 38%, #228A62 66%, #B7CB33 100%);\n}\n\n\/* --- section surfaces ------------------------------------------------------ *\/\n.bp-adv-sec { position: relative; background: var(--bp-white);\n  padding: var(--bp-s-8) var(--bp-side); margin-block: 0; }\n\/* the measure: every direct child of a section is the 760px text column *\/\n.bp-adv-sec > * { max-width: var(--bp-measure); margin-inline: auto; }\n.bp-adv-sec > *:last-child { margin-block-end: 0; }\n.bp-adv-sec--wash  { background: linear-gradient(180deg, #B7CB331F 0%, #B7CB3312 100%), #FFFFFF; }\n.bp-adv-sec--dark  { background: var(--bp-grad-dark); color: var(--bp-white); }\n.bp-adv-sec--dark p, .bp-adv-sec--dark cite, .bp-adv-sec--dark li { color: var(--bp-white); }\n.bp-adv-sec--offer { background: var(--bp-grad-lime); text-align: center; }\n.bp-adv-sec--hero  { padding-block-start: var(--bp-s-6); }\n.bp-adv-sec--disclosure { padding-block: var(--bp-s-6);\n  border-top: 1px solid var(--bp-sand); }\n\n\/* --- the side accent bar, his own example (\"a colour block on the left or the\n       right side of a section\"), design rev 3: a slim vertical bar hugging the\n       text column rather than a wide margin panel. Below 1100px the margin is\n       gone, so it becomes a slim top edge. ---------------------------------- *\/\n.bp-adv-rail { overflow: hidden; }\n.bp-adv-rail::before {\n  content: \"\"; position: absolute; top: var(--bp-s-7); bottom: var(--bp-s-7);\n  width: 6px; border-radius: 3px;\n  background: linear-gradient(180deg, var(--bp-forest) 0%, var(--bp-lime) 100%);\n}\n.bp-adv-rail--left::before  { left: calc((100% - var(--bp-measure)) \/ 2 - 34px); }\n.bp-adv-rail--right::before { right: calc((100% - var(--bp-measure)) \/ 2 - 34px); }\n@media (max-width: 1099px) {\n  .bp-adv-rail::before { left: 0; right: 0; width: auto; bottom: auto; top: 0;\n    height: 4px; border-radius: 0; background: var(--bp-lime); }\n}\n\n\/* --- CORE BLOCKS, styled by element. This is the part that makes an inserted\n       block come out on-design with no class. --------------------------------- *\/\n.bp-adv p { font-size: var(--bp-fs-body); line-height: var(--bp-lh-body);\n  margin-block: 0 var(--bp-s-5); }\n.bp-adv h1 { font-size: var(--bp-fs-h1); font-weight: 700; line-height: 1.22;\n  margin-block: 0 var(--bp-s-4); }\n\/* an H2 is its own colour band, so the page can be read from the headings\n   alone (his point 3). Dark green on light sections, light green on the dark\n   one, so a heading always wins against its own background. *\/\n.bp-adv h2 {\n  font-size: var(--bp-fs-h2); font-weight: 700; line-height: 1.28;\n  margin-block: 0 var(--bp-s-5);\n  background: var(--bp-grad-dark); color: var(--bp-white);\n  padding: var(--bp-s-4) var(--bp-s-5);\n  border-radius: var(--bp-radius-btn);\n  border-left: 6px solid var(--bp-lime);\n}\n.bp-adv-sec--dark h2 { background: var(--bp-lime); color: var(--bp-ink);\n  border-left-color: var(--bp-forest); }\n\/* H3: same background as its section, bigger font (his point 3, verbatim) *\/\n.bp-adv h3 { font-size: var(--bp-fs-h3); font-weight: 700; line-height: 1.35;\n  color: var(--bp-forest); background: transparent; margin-block: 0 var(--bp-s-3); }\n.bp-adv-sec--dark h3 { color: var(--bp-lime); }\n.bp-adv ul, .bp-adv ol { font-size: var(--bp-fs-body); line-height: var(--bp-lh-body);\n  margin-block: 0 var(--bp-s-5); padding-left: var(--bp-s-5); }\n.bp-adv li { margin-block-end: var(--bp-s-2); }\n.bp-adv a { color: var(--bp-teal); text-decoration: underline; }\n.bp-adv a:hover { color: var(--bp-olive); }\n.bp-adv-sec--dark a, .bp-adv-sec--dark strong { color: var(--bp-lime); }\n.bp-adv strong { font-weight: 700; }\n\/* the highlight pill. Colours ride on the inline style core writes, so only\n   the shape lives here and any <mark> in the article picks it up. *\/\n.bp-adv mark {\n  padding: 0 10px; border-radius: 10px; display: inline;\n  -webkit-box-decoration-break: clone; box-decoration-break: clone;\n}\n\/* figures match the approved page exactly: card radius plus the soft shadow,\n   and a left-aligned caption rather than core's centred one *\/\n.bp-adv .wp-block-image { margin-block: var(--bp-s-5); margin-inline: auto; }\n.bp-adv .wp-block-image img { display: block; width: 100%; height: auto;\n  border-radius: var(--bp-radius-card); box-shadow: var(--bp-shadow); }\n.bp-adv .wp-block-image figcaption { font-size: var(--bp-fs-foot); line-height: 1.55;\n  color: var(--bp-foot); text-align: left; margin-block: var(--bp-s-2) 0; }\n.bp-adv .wp-block-embed, .bp-adv .wp-block-video { margin-block: var(--bp-s-5); }\n.bp-adv .wp-block-embed iframe, .bp-adv .wp-block-video video {\n  width: 100%; border-radius: var(--bp-radius-photo); }\n.bp-adv .wp-block-separator:not(.bp-adv-rule) { border: 0; border-top: 1px solid var(--bp-sand);\n  margin-block: var(--bp-s-5); }\n\n\/* quotes: core pullquote and core quote both land on the lime rule. The\n   font-size reset undoes core's own 1.5em on the figure, which would otherwise\n   leak into anything inside the quote that has no size of its own. *\/\n\/* margin-inline is load bearing, and it must be `auto` rather than `0`.\n   `blockquote` and `figure` carry a 40px side margin in the browser's own\n   default stylesheet, which indents the quote inside its rule and makes the\n   copy wrap early on a phone. But these blocks are direct children of a\n   section, so zeroing the side margin also defeats the measure rule\n   `.bp-adv-sec > * { margin-inline: auto }` and pins them to the left edge. *\/\n.bp-adv .wp-block-pullquote, .bp-adv .wp-block-quote {\n  border: 0; border-left: 5px solid var(--bp-lime); background: transparent;\n  padding: var(--bp-s-2) 0 var(--bp-s-2) var(--bp-s-5);\n  margin-block: var(--bp-s-5); margin-inline: auto;\n  text-align: left; font-size: var(--bp-fs-body);\n}\n.bp-adv .wp-block-pullquote blockquote { border: 0; margin: 0; padding: 0; }\n.bp-adv .wp-block-pullquote p, .bp-adv .wp-block-quote p {\n  font-size: 24px; line-height: 1.45; font-weight: 600;\n  margin-block: 0 var(--bp-s-2); color: var(--bp-forest); }\n.bp-adv .wp-block-pullquote cite, .bp-adv .wp-block-quote cite {\n  display: block; margin: 0; font-size: var(--bp-fs-small); color: var(--bp-foot);\n  font-style: normal; text-transform: none; }\n\n\/* buttons: two classes so core's own .wp-block-button__link cannot win *\/\n.bp-adv .wp-block-buttons { display: flex; justify-content: center;\n  margin-block: 0 var(--bp-s-4); }\n.bp-adv .wp-block-button__link {\n  display: inline-flex; align-items: center; justify-content: center; min-height: 48px;\n  background: var(--bp-teal); color: var(--bp-white); font-size: var(--bp-fs-btn);\n  font-weight: 700; line-height: 1.2; border-radius: var(--bp-radius-btn);\n  padding: 15px 44px; text-decoration: none; transition: background 250ms ease;\n  box-shadow: var(--bp-shadow);\n}\n.bp-adv .wp-block-button__link:hover { background: var(--bp-olive); color: var(--bp-white); }\n\n\/* --- slot 1: pre-headline, headline, sub-headline (Jesse's headline skill) --- *\/\n.bp-adv .bp-adv-preheadline {\n  color: var(--bp-forest); font-size: var(--bp-fs-pre); font-weight: 600; line-height: 1.5;\n  border-left: 4px solid var(--bp-lime); padding-left: var(--bp-s-3);\n  margin-block: 0 var(--bp-s-4);\n}\n.bp-adv .bp-adv-subheadline { font-size: 21px; line-height: 1.5; font-weight: 600;\n  color: var(--bp-forest); margin-block: 0 var(--bp-s-5); }\n.bp-adv .bp-adv-standfirst { font-size: 19px; line-height: 1.65;\n  margin-block: 0 var(--bp-s-5); }\n.bp-adv .bp-adv-lede { font-size: 18px; line-height: 1.7;\n  margin-block: 0 var(--bp-s-5); }\n.bp-adv .bp-adv-byline { font-size: var(--bp-fs-small); color: var(--bp-foot);\n  line-height: 1.6; margin-block: 0 var(--bp-s-5); }\n.bp-adv .bp-adv-socialproof { font-size: var(--bp-fs-small); color: var(--bp-foot);\n  margin-block: 0 var(--bp-s-5); }\n\/* the offer headline above the CTA. Jesse asked for a second H1 here; the brand\n   doc's accessibility rule is one h1 per page, so it is rendered at H1 size and\n   stays an h2 element. Named in the close as the one design conflict. *\/\n.bp-adv h2.bp-adv-offerhead {\n  font-size: var(--bp-fs-h1); font-weight: 700; line-height: 1.22;\n  margin-block: 0 var(--bp-s-4); text-align: center; color: var(--bp-ink);\n  background: none; padding: 0; border: 0; border-radius: 0;\n}\n\n\/* --- Written by + Verified by. The avatar is the first child and spans the\n       three text rows, so the whole box is four ordinary paragraphs and stays\n       editable without nested columns. ---------------------------------------- *\/\n.bp-adv .bp-adv-authors {\n  background: var(--bp-white); border: 1px solid var(--bp-sand);\n  border-top: 4px solid var(--bp-lime); border-radius: var(--bp-radius-card);\n  box-shadow: var(--bp-shadow); padding: var(--bp-s-5);\n  margin-block: 0 var(--bp-s-4);\n  \/* auto-fit, so switching the verified box off leaves one full-width author\n     rather than a half-empty card *\/\n  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n  gap: var(--bp-s-5); align-items: start;\n}\n.bp-adv .bp-adv-author {\n  display: grid; grid-template-columns: 62px 1fr; gap: 0 var(--bp-s-3);\n  align-items: start; min-width: 0;\n}\n.bp-adv .bp-adv-avatar {\n  grid-row: 1 \/ span 3; width: 62px; height: 62px; border-radius: 50%;\n  background: #B7CB331F; border: 2px dashed var(--bp-olive);\n  display: flex; align-items: center; justify-content: center;\n  font-size: 10px; font-weight: 700; letter-spacing: 0.06em; color: var(--bp-forest);\n  margin-block: 0;\n}\n.bp-adv .bp-adv-author.is-placeholder .bp-adv-avatar {\n  border-color: var(--bp-sand); background: #fff; color: var(--bp-foot); }\n.bp-adv .bp-adv-author-role {\n  font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;\n  color: var(--bp-forest); line-height: 1.6; margin-block: 0; }\n.bp-adv .bp-adv-author.is-placeholder .bp-adv-author-role { color: var(--bp-foot); }\n.bp-adv .bp-adv-author-name { font-size: 17px; font-weight: 700; line-height: 1.35;\n  margin-block: 0; }\n.bp-adv .bp-adv-author-cred { font-size: var(--bp-fs-foot); color: var(--bp-foot);\n  line-height: 1.55; margin-block: 0; }\n\/* the optional wrapper must not break the two-column grid of the box *\/\n.bp-adv .bp-adv-authors > .bp-optional { display: contents; }\n.bp-adv .bp-adv-authors > .bp-optional.bp-off { display: none !important; }\n\n\/* --- placeholders: image slot, video slot ---------------------------------- *\/\n.bp-adv .bp-slot {\n  display: flex; align-items: center; justify-content: center; text-align: center;\n  min-height: 180px; padding: var(--bp-s-4); margin-block: var(--bp-s-5) 0;\n  border: 2px dashed var(--bp-olive); border-radius: var(--bp-radius-photo);\n  background: #B7CB331F; color: var(--bp-forest);\n}\n.bp-adv .bp-slot p { font-size: var(--bp-fs-small); font-weight: 700; margin-block: 0; }\n.bp-adv .bp-slot--video { min-height: 260px; }\n\n\/* --- mid-article CTA band --------------------------------------------------- *\/\n.bp-adv .bp-adv-midcta {\n  background: var(--bp-grad-lime); border: 1px solid var(--bp-lime);\n  border-radius: var(--bp-radius-card); padding: var(--bp-s-5) var(--bp-s-4);\n  margin-block: var(--bp-s-6); text-align: center;\n}\n.bp-adv .bp-adv-midcta .wp-block-buttons { margin-block-end: var(--bp-s-2); }\n.bp-adv .bp-adv-midcta .bp-adv-foot { margin-block: 0; }\n\n\/* the closing CTA is one named unit in List View, so it moves and toggles as a\n   whole. It carries no box of its own: the spacing must read exactly as it does\n   on the approved page, where the three parts are plain siblings. *\/\n.bp-adv .bp-adv-ctablock { margin-block: 0 var(--bp-s-5); }\n.bp-adv .bp-adv-ctablock .wp-block-buttons { margin-block-end: var(--bp-s-4); }\n.bp-adv .bp-adv-ctablock .bp-adv-foot { margin-block: 0; }\n\n\/* --- the condition, slot 8: the results page reference-card shape ----------- *\/\n.bp-adv .bp-adv-condition {\n  background: var(--bp-white); border: 1px solid var(--bp-sand);\n  border-left: 5px solid var(--bp-lime); border-radius: var(--bp-radius-btn);\n  padding: var(--bp-s-4) var(--bp-s-5); font-weight: 600; box-shadow: var(--bp-shadow);\n}\n\n\/* --- the numbers card: the results page focus panel, same gradient, same\n       radius, same lime figures (\"use more of that design\") ------------------ *\/\n.bp-adv .bp-adv-numcard {\n  background: linear-gradient(135deg, var(--bp-teal) 0%, var(--bp-forest) 100%);\n  border-radius: var(--bp-radius-card);\n  padding: var(--bp-s-6) var(--bp-s-5) var(--bp-s-5);\n  box-shadow: var(--bp-shadow); margin-block: var(--bp-s-5) 0;\n  position: relative; overflow: hidden;\n}\n.bp-adv .bp-adv-numcard::after {\n  content: \"\"; position: absolute; right: -70px; top: -70px; width: 240px; height: 240px;\n  border-radius: 50%; background: rgba(255,255,255,0.05); pointer-events: none;\n}\n.bp-adv .bp-adv-numcard .wp-block-columns {\n  position: relative; z-index: 1; gap: var(--bp-s-5); margin-block: 0; }\n.bp-adv .bp-adv-numcard .wp-block-column { min-width: 0; }\n.bp-adv .bp-adv-num-v { font-size: 44px; font-weight: 700; line-height: 1.12;\n  color: var(--bp-lime); text-align: center; margin-block: 0 var(--bp-s-2); }\n.bp-adv .bp-adv-num-l { font-size: var(--bp-fs-small); line-height: 1.5;\n  color: rgba(255,255,255,0.92); text-align: center; margin-block: 0; }\n.bp-adv .bp-adv-numsrc { margin-block: var(--bp-s-5) 0; }\n\n\/* --- the proof slot: a dashed card until a consented quote exists. The quote\n       inside loses its own vertical margins, otherwise the card is one full\n       block of spacing taller than the approved page. --------------------- *\/\n.bp-adv .bp-adv-testimonial {\n  border: 1px dashed var(--bp-sand); border-left: 5px dashed var(--bp-sand);\n  background: var(--bp-white); border-radius: var(--bp-radius-card);\n  padding: var(--bp-s-5); margin-block: var(--bp-s-5);\n}\n\/* the card IS the quote frame, so the quote inside it carries no rule and no\n   indent of its own; otherwise the copy is indented twice and wraps early *\/\n.bp-adv .bp-adv-testimonial .wp-block-quote {\n  border: 0; padding: 0; margin-block: 0; }\n.bp-adv .bp-adv-testimonial .wp-block-quote p {\n  font-size: 17px; font-weight: 500; color: var(--bp-foot); }\n\n\/* --- steps, footnotes, disclosure ------------------------------------------- *\/\n.bp-adv .bp-adv-steps {\n  max-width: 520px; margin-block: 0 var(--bp-s-5); margin-inline: auto;\n  padding-left: 0; list-style: none; counter-reset: bpstep; text-align: left;\n}\n.bp-adv .bp-adv-steps li { position: relative; padding-left: 40px;\n  margin-block-end: var(--bp-s-3); counter-increment: bpstep; }\n.bp-adv .bp-adv-steps li::before {\n  content: counter(bpstep); position: absolute; left: 0; top: 4px;\n  width: 26px; height: 26px; border-radius: 50%;\n  background: var(--bp-forest); color: var(--bp-white);\n  font-size: var(--bp-fs-small); font-weight: 700;\n  display: flex; align-items: center; justify-content: center; line-height: 1;\n}\n.bp-adv .bp-adv-foot { font-size: var(--bp-fs-foot); color: var(--bp-foot); line-height: 1.6; }\n.bp-adv-sec--dark .bp-adv-foot { color: rgba(255,255,255,0.82); }\n\/* Jesse's mandatory CTA subtext, 2026-07-30 15:59: directly under the button,\n   one notch above the microline in weight so it reads as part of the ask *\/\n.bp-adv .bp-adv-ctasub {\n  margin-block: calc(var(--bp-s-4) * -0.5) var(--bp-s-2); margin-inline: auto;\n  max-width: 460px; font-size: 15px; line-height: 1.5; font-weight: 600;\n  color: var(--bp-teal); text-align: center;\n}\n.bp-adv .bp-adv-disclosure { font-size: var(--bp-fs-foot); color: var(--bp-foot);\n  line-height: 1.6; }\n.bp-adv .bp-adv-sources { margin-block-start: var(--bp-s-5); }\n.bp-adv .bp-adv-srclist { font-size: var(--bp-fs-foot); color: var(--bp-foot);\n  line-height: 1.6; padding-left: 20px; margin-block: 0; }\n.bp-adv .bp-adv-srclist li { margin-block-end: var(--bp-s-1); }\n.bp-adv .bp-h--center { text-align: center; }\n\n@media (max-width: 767px) {\n  .bp-adv {\n    --bp-fs-h1: 30px; --bp-fs-h2: 24px; --bp-fs-h3: 20px; --bp-fs-body: 16px;\n    --bp-fs-btn: 16px; --bp-fs-pre: 14px; --bp-side: 20px;\n    --bp-s-8: 44px; --bp-s-7: 32px;\n  }\n  .bp-adv .bp-adv-subheadline { font-size: 18px; }\n  .bp-adv .bp-adv-standfirst { font-size: 17px; }\n  .bp-adv .bp-adv-lede { font-size: 16px; }\n  .bp-adv .wp-block-pullquote p, .bp-adv .wp-block-quote p { font-size: 20px; }\n  .bp-adv h2 { padding: var(--bp-s-3) var(--bp-s-4); }\n  .bp-adv .bp-adv-num-v { font-size: 36px; }\n  .bp-adv .bp-adv-authors { grid-template-columns: 1fr; gap: var(--bp-s-5); }\n  \/* the button is full width on mobile. Core wraps the link in .wp-block-button,\n     which is shrink-to-fit, so widening only the link leaves it content-sized. *\/\n  .bp-adv .wp-block-button { width: 100%; }\n  .bp-adv .wp-block-button__link { padding: 15px 24px; width: 100%; }\n  .bp-adv .bp-adv-numcard .wp-block-columns { gap: var(--bp-s-4); }\n}\n@media (prefers-reduced-motion: reduce) { .bp-adv * { transition-duration: 0ms; } }\n\n\/* --- the author portrait -----------------------------------------------------\n   Two shapes, because there are two ways a portrait reaches the box.\n   1. `bp-adv-avatar--photo` turns the dashed FOTO circle into a photo frame when\n      an editor drops an inline image into the placeholder paragraph.\n   2. `bp-adv-avatar-img` is the shipped path: a REAL core\/image block, so the\n      picture is click-editable and \"Vervangen\" works. The grid-row span is the\n      load-bearing line. The paragraph avatar carries `grid-row: 1 \/ span 3` in\n      the 62px + 1fr card grid; a figure that does not carry it drops the name\n      under the photo instead of beside it. Found by screenshot on 2026-07-30\n      and fixed on the live page with exactly this rule. ---------------------- *\/\n.bp-adv-avatar--photo{border-style:solid;padding:0;overflow:hidden;background:#fff}\n.bp-adv-avatar--photo img{width:100%;height:100%;object-fit:cover;object-position:center;border-radius:50%;display:block}\n.bp-adv-author .bp-adv-avatar-img{grid-row:1 \/ span 3;flex:0 0 auto;margin:0;width:62px;height:62px}\n.bp-adv-author .bp-adv-avatar-img img{width:62px;height:62px;object-fit:cover;object-position:center;border-radius:50%;border:2px solid var(--bp-olive);display:block}\n\n\/* --- the advertorial's own chrome (synced patterns 4822 and 4823) ------------\n   Deliberately NOT scoped to `.bp-adv`: the header and footer are siblings of\n   the article, outside that container, because canvas gives the page no chrome\n   of its own. A <style> element styles the whole document wherever it sits, so\n   these rules reach the two pattern references either side of the article. --- *\/\n.bp-adv-sitehead{background:#fff;border-bottom:1px solid #e6ece9;padding:12px 24px;margin:0}\n.bp-adv-sitehead .bp-adv-sitehead-logo{margin:0 auto;max-width:1120px}\n.bp-adv-sitehead img{height:30px;width:auto;display:block}\n.bp-adv-sitefoot{background:#f4f1ec;border-top:1px solid #e6ece9;padding:28px 24px;margin-top:44px}\n.bp-adv-sitefoot p{max-width:1120px;margin:0 auto;font-size:13px;line-height:1.8;color:#4d5f5d;text-align:center}\n.bp-adv-sitefoot a{color:#005859;text-decoration:underline}\n.bp-adv-sitefoot .bp-adv-sitefoot-legal{margin-top:6px}\n.bp-biomarker sup{font-size:.72em;line-height:0;vertical-align:super;color:var(--bp-foot);margin-left:1px}\n.bp-biomarker .bp-bm-crumbs{font-size:var(--bp-fs-small);color:var(--bp-foot);margin-block:0 var(--bp-s-3)}\n.bp-biomarker .bp-bm-crumbs a,.bp-biomarker .bp-bm-toc a,.bp-biomarker .bp-bm-src a,.bp-biomarker .bp-bm-rows a,\n.bp-biomarker .bp-bm-related a{display:inline-flex;align-items:center;min-height:44px}\n.bp-biomarker .bp-bm-names{font-size:var(--bp-fs-small);color:var(--bp-foot);margin-block:0 var(--bp-s-4)}\n.bp-biomarker .bp-bm-toc ul{margin-block:0;padding-left:var(--bp-s-5)}\n.bp-biomarker .bp-bm-toc li{margin:0 0 var(--bp-s-1)}\n.bp-biomarker .bp-bm-src li{overflow-wrap:anywhere}\n.bp-biomarker .bp-bm-rows{list-style:none;padding-left:0}\n.bp-biomarker .bp-bm-rows li{padding-block:6px;border-bottom:1px solid var(--bp-sand)}\n.bp-biomarker .bp-bm-rows li:last-child{border-bottom:0}\n.bp-biomarker .bp-bm-rows a{font-weight:700}\n.bp-biomarker .bp-bm-count{font-size:var(--bp-fs-small);color:var(--bp-foot);margin-block:0 var(--bp-s-3)}\n.bp-biomarker figure.wp-block-table{margin-block:var(--bp-s-4) var(--bp-s-2);margin-inline:auto;overflow:visible}\n.bp-biomarker figure.wp-block-table table{table-layout:fixed;width:100%;border-collapse:collapse;\n font-size:var(--bp-fs-small);line-height:1.45;background:var(--bp-white)}\n.bp-biomarker figure.wp-block-table th,.bp-biomarker figure.wp-block-table td{border:1px solid var(--bp-sand);\n padding:8px 10px;vertical-align:top;text-align:left;hyphens:auto;-webkit-hyphens:auto;overflow-wrap:break-word}\n.bp-biomarker figure.wp-block-table thead th{background:var(--bp-teal);color:var(--bp-white);font-weight:600}\n.bp-biomarker .bp-bm-caption{font-size:var(--bp-fs-foot);color:var(--bp-foot);margin-block:0 var(--bp-s-5)}\n@media (max-width:480px){.bp-biomarker figure.wp-block-table th,.bp-biomarker figure.wp-block-table td{\n padding:6px 6px;font-size:13.5px}}<\/style>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/reumafactor\/#article\",\"headline\":\"Reumafactor (RF): wat je waarde zegt\",\"description\":\"Wat is reumafactor, wat zegt een lage of hoge waarde en wat beinvloedt je uitslag? Helder uitgelegd, met de bronnen erbij.\",\"inLanguage\":\"nl-NL\",\"dateModified\":\"2026-10-10\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/reumafactor\/\"},\"isPartOf\":{\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/reumafactor\/\"},\"publisher\":{\"@id\":\"https:\/\/bioprofile.com\/#organization\"},\"about\":{\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/reumafactor\/#biomarker\"},\"citation\":[{\"@type\":\"CreativeWork\",\"name\":\"MedlinePlus, U.S. National Library of Medicine. Rheumatoid Factor (RF) Test. Geraadpleegd op 10 oktober 2026.\",\"url\":\"https:\/\/medlineplus.gov\/lab-tests\/rheumatoid-factor-rf-test\/\"},{\"@type\":\"CreativeWork\",\"name\":\"Labplusarts, het laboratorium waarmee BioProfile werkt: referentiewaarde bij de bepaling reumafactor (RF), 0 tot 14 ku\/l. Lijst van 24 september 2026.\"},{\"@type\":\"CreativeWork\",\"name\":\"BioProfile, de pakketten van het bloedonderzoek en de waarden in elk pakket.\",\"url\":\"https:\/\/bioprofile.com\/bloedonderzoek\/\"}]},{\"@type\":\"MedicalTest\",\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/reumafactor\/#biomarker\",\"name\":\"Reumafactor\",\"alternateName\":[\"Rheumatoid factor\"]}]}<\/script>\n\n\n\n<section class=\"wp-block-group bp-adv bp-biomarker bp-biomarker--page is-layout-flow wp-block-group-is-layout-flow\">\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity bp-adv-rule\"\/>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--hero is-layout-flow wp-block-group-is-layout-flow\">\n\n<p class=\"bp-bm-crumbs wp-block-paragraph\"><a href=\"https:\/\/bioprofile.com\/de\/\">Home<\/a> \u203a <a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/\">Biomarker<\/a> \u203a <span>Rheumafaktor<\/span><\/p>\n\n\n\n<h1 class=\"wp-block-heading bp-adv-h1\">Rheumafaktor (RF): was Ihr Wert aussagt<\/h1>\n\n\n\n<p class=\"bp-adv-standfirst wp-block-paragraph\">Der Rheumafaktor ist ein Eiwei\u00df, das Ihr Immunsystem bildet. Wenig oder kein Rheumafaktor gilt als normal, w\u00e4hrend ein h\u00f6herer Wert zusammen mit Beschwerden auf eine Autoimmunerkrankung oder eine andere Erkrankung hinweisen kann.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"bp-adv-lede wp-block-paragraph\">Auf dieser Seite lesen Sie, was der Rheumafaktor ist, was die Leitlinien \u00fcber einen zu niedrigen oder zu hohen Wert sagen, was Ihren Wert beeinflusst und welche Werte Sie am besten daneben betrachten.<\/p>\n\n\n\n<p class=\"bp-bm-names wp-block-paragraph\">Auch genannt: RF-Bluttest. Im Labor: RF.<\/p>\n\n\n\n<p class=\"bp-adv-byline wp-block-paragraph\">Aktualisiert am 10. Oktober 2026<\/p>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--wash is-layout-flow wp-block-group-is-layout-flow\">\n\n<div class=\"wp-block-group bp-bm-toc is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-inhoud\">Auf dieser Seite<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li><a href=\"#bp-in-het-kort\">Kurz gefasst<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-is-reumafactor\">Was ist der Rheumafaktor?<\/a><\/li>\n\n\n<li><a href=\"#bp-waarom-het-ertoe-doet\">Warum der Rheumafaktor wichtig ist<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-je-waarde-zegt\">Was Ihr Rheumafaktorwert aussagt<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-het-beinvloedt\">Was Ihren Rheumafaktor beeinflusst<\/a><\/li>\n\n\n<li><a href=\"#bp-welke-pakketten\">Welche BioProfile-Pakete den Rheumafaktor messen<\/a><\/li>\n\n\n<li><a href=\"#bp-waarden-die-erbij-horen\">Werte, die dazugeh\u00f6ren<\/a><\/li>\n\n\n<li><a href=\"#bp-hoe-gemaakt\">Wie diese Seite entstanden ist<\/a><\/li>\n\n\n<li><a href=\"#bp-bronnen\">Quellen<\/a><\/li>\n\n<\/ul>\n\n<\/div>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-in-het-kort\">Kurz gefasst<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>Der Rheumafaktor ist ein Eiwei\u00df Ihres Immunsystems, das gesunde Zellen angreift statt Krankheitserreger.<sup>[1]<\/sup><\/li>\n\n\n<li>Viele Menschen haben eine kleine Menge Rheumafaktor im Blut und sind gesund.<sup>[1]<\/sup><\/li>\n\n\n<li>Ein h\u00f6herer Wert kann, zusammen mit Beschwerden, auf eine Autoimmunerkrankung der Gelenke oder eine andere Erkrankung hinweisen.<sup>[1]<\/sup><\/li>\n\n\n<li>Das Ergebnis allein sagt nicht, welche Erkrankung Sie haben; ein Arzt betrachtet es zusammen mit Ihren Beschwerden und anderen Tests.<sup>[1]<\/sup><\/li>\n\n<\/ul>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--wash is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-wat-is-reumafactor\">Was ist der Rheumafaktor?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Normalerweise bildet Ihr Immunsystem Eiwei\u00dfe, Antik\u00f6rper, die Krankheitserreger angreifen. Der Rheumafaktor tut das nicht. Er greift gesunde Zellen an, meist IgG, einen der h\u00e4ufigsten Antik\u00f6rper.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ihr Immunsystem bildet Rheumafaktor irrt\u00fcmlich oder wenn es besonders stark gegen Krankheitserreger arbeitet.<sup>[1]<\/sup><\/p>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-waarom-het-ertoe-doet\">Warum der Rheumafaktor wichtig ist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c4rzte nutzen den Rheumafaktor meist zusammen mit anderen Tests. So k\u00f6nnen sie eine Autoimmunerkrankung der Gelenke aufsp\u00fcren, eine langwierige Erkrankung, die auch Organe betreffen kann.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Der Test kann auch bei der Suche nach anderen Autoimmunerkrankungen helfen, nach langwierigen Erkrankungen der Leber, der Lunge oder des Herzens sowie nach bestimmten Erkrankungen des Blutes.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Menschen mit dieser Erkrankung der Gelenke haben oft eine Blutarmut. Haben Sie eine Blutarmut, kann Ihr Arzt deshalb auch den Rheumafaktor pr\u00fcfen.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Der Rheumafaktor spielt bei Gelenkverschlei\u00df keine Rolle. Dieser Verschlei\u00df ist keine Autoimmunerkrankung.<sup>[1]<\/sup><\/p>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--wash is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-wat-je-waarde-zegt\">Was Ihr Rheumafaktorwert aussagt<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Die Richtlinie des Labors<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Das Labor, mit dem BioProfile zusammenarbeitet, Labplusarts, verwendet f\u00fcr den Rheumafaktor einen Referenzbereich von 0 bis 14 ku\/l. Einen Wert innerhalb dieser Grenzen bezeichnet das Labor als normal.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Was MedlinePlus sagt<\/h3>\n\n\n\n<figure class=\"wp-block-table bp-bm-table\"><table><thead><tr><th>Ergebnis<\/th><th>Was es bedeuten kann<\/th><th>F\u00fcr wen<\/th><\/tr><\/thead><tbody><tr><td>Negativ (normal)<sup>[1]<\/sup><\/td><td>Wenig oder kein Rheumafaktor in Ihrem Blut; schlie\u00dft eine Erkrankung der Gelenke nicht aus<\/td><td>Alle, die den Test machen<\/td><\/tr><tr><td>Positiv (auff\u00e4llig)<sup>[1]<\/sup><\/td><td>Mehr Rheumafaktor im Blut; kann auf eine Autoimmunerkrankung oder eine andere Erkrankung hinweisen<\/td><td>Alle, die den Test machen, beurteilt zusammen mit den Beschwerden<\/td><\/tr><tr><td>Eine Menge<sup>[1]<\/sup><\/td><td>Je h\u00f6her der Wert, desto gr\u00f6\u00dfer die Wahrscheinlichkeit einer Erkrankung, die mit dem Rheumafaktor zusammenh\u00e4ngt<\/td><td>Wenn das Labor eine Menge mit eigenem normalen Referenzbereich meldet<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"bp-bm-caption wp-block-paragraph\">Quelle: MedlinePlus, U.S. National Library of Medicine, \u00fcber den Rheumafaktortest im Allgemeinen.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rheumafaktor zu niedrig<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wenig oder kein Rheumafaktor wird als normales Ergebnis bezeichnet. Dennoch schlie\u00dft das eine Erkrankung der Gelenke nicht aus. Haben Sie trotzdem Beschwerden, kann Ihr Arzt weitere Tests veranlassen.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rheumafaktor zu hoch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ein h\u00f6herer Wert kann auf eine Autoimmunerkrankung, eine langwierige Entz\u00fcndung oder bestimmte andere Erkrankungen hinweisen. Aber auch ein hoher Wert ist nicht immer ein Zeichen f\u00fcr eine Erkrankung. Ihr Arzt betrachtet Ihre Beschwerden, Ihre Vorgeschichte und andere Tests und kann Sie an einen Rheumatologen \u00fcberweisen.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BioProfile arbeitet an eigenen Zonen pro Wert, von Risiko bis optimal. Ein Arzt pr\u00fcft diese Zonen, bevor sie in Ihrem Ergebnis erscheinen.<\/p>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-wat-het-beinvloedt\">Was Ihren Rheumafaktor beeinflusst<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Ihr Immunsystem<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ihr Immunsystem bildet mehr Rheumafaktor, wenn es besonders stark gegen Krankheitserreger arbeitet, oder irrt\u00fcmlich bei einer Autoimmunerkrankung.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Langwierige Erkrankungen<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Langwierige Erkrankungen der Leber, der Lunge oder des Herzens k\u00f6nnen mit einem h\u00f6heren Rheumafaktor einhergehen.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vorbereitung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Auf den Test m\u00fcssen Sie sich nicht besonders vorbereiten.<sup>[1]<\/sup><\/p>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--wash is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-welke-pakketten\">Welche BioProfile-Pakete den Rheumafaktor messen<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Der Rheumafaktor ist in BioProfile 121 und 150 enthalten.<sup>[3]<\/sup><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-3e41869c wp-block-buttons-is-layout-flex\">\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/bioprofile.com\/de\/blutuntersuchung\/\">Die Pakete ansehen<\/a><\/div>\n\n<\/div>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-waarden-die-erbij-horen\">Werte, die dazugeh\u00f6ren<\/h2>\n\n\n\n<ul class=\"wp-block-list bp-bm-related\">\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/leukozyten\/\">Leukozyten<\/a>: ein anderer Blutwert, den Ihr Arzt einbeziehen kann, weil der Rheumafaktor meist zusammen mit anderen Tests beurteilt wird.<sup>[1]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/kreatinin\/\">Kreatinin<\/a>: ein zus\u00e4tzlicher Test, der hilft, das Gesamtbild zu sehen, denn ein Rheumafaktor-Ergebnis allein sagt nicht, welche Erkrankung Sie haben.<sup>[1]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/lymphozyten\/\">Lymphozyten<\/a>: ein anderer Wert Ihres Blutes, den Ihr Arzt neben den Rheumafaktor legen kann, zusammen mit Ihren Beschwerden und Ihrer Vorgeschichte.<sup>[1]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/eosinophile\/\">Eosinophile Granulozyten<\/a>: ein erg\u00e4nzender Wert, weil Ihr Arzt den Rheumafaktor meist zusammen mit anderen Tests betrachtet.<sup>[1]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/monozyten\/\">Monozyten<\/a>: ein anderer Blutwert, den Ihr Arzt mit abw\u00e4gen kann, denn das Ergebnis des Rheumafaktors allein reicht f\u00fcr eine Beurteilung nicht aus.<sup>[1]<\/sup><\/li>\n\n<\/ul>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--wash is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-hoe-gemaakt\">Wie diese Seite entstanden ist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Die BioProfile Redaktion hat diese Seite am 10. Oktober 2026 auf Grundlage der unten genannten Quellen verfasst, die wir am 10. Oktober 2026 gelesen haben. Jede Zahl auf dieser Seite steht in einer dieser Quellen, mit der Nummer der jeweiligen Quelle dabei. Eine Fachperson pr\u00fcft diese Seite noch; nach dieser Pr\u00fcfung stehen der Name der Fachperson und das Datum der Pr\u00fcfung oben auf der Seite. Diese Seite dient der Erkl\u00e4rung und stellt keine Diagnose. Besprechen Sie einen auff\u00e4lligen Wert mit Ihrem Hausarzt.<\/p>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group bp-adv-sec bp-adv-sec--disclosure is-layout-flow wp-block-group-is-layout-flow\">\n\n<h2 class=\"wp-block-heading\" id=\"bp-bronnen\">Quellen<\/h2>\n\n\n\n<ol class=\"wp-block-list bp-adv-srclist bp-bm-src\">\n\n<li>MedlinePlus, U.S. National Library of Medicine. Rheumatoid Factor (RF) Test. Abgerufen am 10. Oktober 2026. <a href=\"https:\/\/medlineplus.gov\/lab-tests\/rheumatoid-factor-rf-test\/\" target=\"_blank\" rel=\"noopener\">https:\/\/medlineplus.gov\/lab-tests\/rheumatoid-factor-rf-test\/<\/a><\/li>\n\n\n<li>Labplusarts, das Labor, mit dem BioProfile zusammenarbeitet: Referenzwert bei der Bestimmung Rheumafaktor (RF), 0 bis 14 ku\/l. Liste vom 24. September 2026.<\/li>\n\n\n<li>BioProfile, die Pakete der Blutuntersuchung und die Werte in jedem Paket. <a href=\"https:\/\/bioprofile.com\/de\/blutuntersuchung\/\" target=\"_blank\" rel=\"noopener\">https:\/\/bioprofile.com\/de\/blutuntersuchung\/<\/a><\/li>\n\n<\/ol>\n\n<\/div>\n\n<\/section>\n\n","protected":false},"excerpt":{"rendered":"<p>Home \u203a Biomarker \u203a Rheumafaktor Rheumafaktor (RF): was Ihr Wert aussagt Der Rheumafaktor ist ein Eiwei\u00df, das Ihr Immunsystem bildet. Wenig oder kein Rheumafaktor gilt als normal, w\u00e4hrend ein h\u00f6herer Wert zusammen mit Beschwerden auf eine Autoimmunerkrankung oder eine andere Erkrankung hinweisen kann.[1] Auf dieser Seite lesen Sie, was der Rheumafaktor ist, was die Leitlinien [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":0,"parent":6596,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_yoast_wpseo_title":"Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile","_yoast_wpseo_metadesc":"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.","_yoast_wpseo_meta-robots-noindex":"2","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_opengraph-image-id":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_twitter-image-id":"","inline_featured_image":false,"footnotes":""},"class_list":["post-12464","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile<\/title>\n<meta name=\"description\" content=\"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile\" \/>\n<meta property=\"og:description\" content=\"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/\" \/>\n<meta property=\"og:site_name\" content=\"Bioprofile.com\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-05T21:06:16+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data1\" content=\"4\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/biomarkers\\\/rheumafaktor\\\/\",\"url\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/biomarkers\\\/rheumafaktor\\\/\",\"name\":\"Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/#website\"},\"datePublished\":\"2026-10-23T05:00:00+00:00\",\"dateModified\":\"2026-11-05T21:06:16+00:00\",\"description\":\"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/biomarkers\\\/rheumafaktor\\\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/bioprofile.com\\\/de\\\/biomarkers\\\/rheumafaktor\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/biomarkers\\\/rheumafaktor\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/home-2026\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Biomarker\",\"item\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/biomarkers\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Rheumafaktor\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/#website\",\"url\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/\",\"name\":\"Bioprofile.com\",\"description\":\"Live longer, stay younger\",\"publisher\":{\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"de\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/#organization\",\"name\":\"Bioprofile.com\",\"url\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/bioprofile.com\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/logo.svg\",\"contentUrl\":\"https:\\\/\\\/bioprofile.com\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/logo.svg\",\"width\":173,\"height\":48,\"caption\":\"Bioprofile.com\"},\"image\":{\"@id\":\"https:\\\/\\\/bioprofile.com\\\/de\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile","description":"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/","og_locale":"de_DE","og_type":"article","og_title":"Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile","og_description":"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.","og_url":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/","og_site_name":"Bioprofile.com","article_modified_time":"2026-11-05T21:06:16+00:00","twitter_card":"summary_large_image","twitter_misc":{"Gesch\u00e4tzte Lesezeit":"4\u00a0Minuten"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/","url":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/","name":"Rheumafaktor (RF): was Ihr Wert aussagt | BioProfile","isPartOf":{"@id":"https:\/\/bioprofile.com\/de\/#website"},"datePublished":"2026-10-23T05:00:00+00:00","dateModified":"2026-11-05T21:06:16+00:00","description":"Was ist der Rheumafaktor, was sagt ein niedriger oder hoher Wert aus und was beeinflusst Ihr Ergebnis? Verst\u00e4ndlich erkl\u00e4rt, mit den Quellen dazu.","breadcrumb":{"@id":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/bioprofile.com\/de\/biomarkers\/rheumafaktor\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/bioprofile.com\/de\/home-2026\/"},{"@type":"ListItem","position":2,"name":"Biomarker","item":"https:\/\/bioprofile.com\/de\/biomarkers\/"},{"@type":"ListItem","position":3,"name":"Rheumafaktor"}]},{"@type":"WebSite","@id":"https:\/\/bioprofile.com\/de\/#website","url":"https:\/\/bioprofile.com\/de\/","name":"Bioprofile.com","description":"Live longer, stay younger","publisher":{"@id":"https:\/\/bioprofile.com\/de\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/bioprofile.com\/de\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":"Organization","@id":"https:\/\/bioprofile.com\/de\/#organization","name":"Bioprofile.com","url":"https:\/\/bioprofile.com\/de\/","logo":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/bioprofile.com\/de\/#\/schema\/logo\/image\/","url":"https:\/\/bioprofile.com\/wp-content\/uploads\/2024\/08\/logo.svg","contentUrl":"https:\/\/bioprofile.com\/wp-content\/uploads\/2024\/08\/logo.svg","width":173,"height":48,"caption":"Bioprofile.com"},"image":{"@id":"https:\/\/bioprofile.com\/de\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/pages\/12464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/comments?post=12464"}],"version-history":[{"count":2,"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/pages\/12464\/revisions"}],"predecessor-version":[{"id":15268,"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/pages\/12464\/revisions\/15268"}],"up":[{"embeddable":true,"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/pages\/6596"}],"wp:attachment":[{"href":"https:\/\/bioprofile.com\/de\/wp-json\/wp\/v2\/media?parent=12464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}