{"id":8628,"date":"2026-10-05T15:00:00","date_gmt":"2026-10-05T15:00:00","guid":{"rendered":"https:\/\/bioprofile.com\/?page_id=8628"},"modified":"2026-10-05T15:29:04","modified_gmt":"2026-10-05T15:29:04","slug":"rdw","status":"publish","type":"page","link":"https:\/\/bioprofile.com\/de\/biomarkers\/rdw\/","title":{"rendered":"RDW"},"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. 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Lees waar een hoge of lage waarde op kan wijzen en wat de richtlijnen zeggen.\",\"inLanguage\":\"nl-NL\",\"dateModified\":\"2026-10-03\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/rdw\/\"},\"isPartOf\":{\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/rdw\/\"},\"publisher\":{\"@id\":\"https:\/\/bioprofile.com\/#organization\"},\"about\":{\"@id\":\"https:\/\/bioprofile.com\/biomarkers\/rdw\/#biomarker\"},\"citation\":[{\"@type\":\"CreativeWork\",\"name\":\"Patel KV, Ferrucci L, Ershler WB, et al. Red blood cell distribution width and the risk of death in middle-aged and older adults. Arch Intern Med. 2009;169(5):515-23.\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19273783\/\"},{\"@type\":\"CreativeWork\",\"name\":\"MedlinePlus, U.S. National Library of Medicine. RDW (Red Cell Distribution Width). 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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\/rdw\/#biomarker\",\"name\":\"RDW\",\"alternateName\":[\"RDW\"]}]}<\/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>RDW<\/span><\/p>\n\n\n\n<h1 class=\"wp-block-heading bp-adv-h1\">RDW: was Ihr Wert \u00fcber Ihre roten Blutk\u00f6rperchen aussagt<\/h1>\n\n\n\n<p class=\"bp-adv-standfirst wp-block-paragraph\">In einer landesweiten Studie mit 8175 Erwachsenen ab 45 Jahren ging eine h\u00f6here RDW stark mit einem h\u00f6heren Sterberisiko einher. Das galt auch f\u00fcr Menschen ohne Blutarmut.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"bp-adv-lede wp-block-paragraph\">Auf dieser Seite lesen Sie, was RDW 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: Verteilungsbreite der roten Blutk\u00f6rperchen, Erythrozytenverteilungsbreite, RDW-SD. Im Labor: RDW.<\/p>\n\n\n\n<p class=\"bp-adv-byline wp-block-paragraph\">Aktualisiert am 3. 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-rdw\">Was ist RDW?<\/a><\/li>\n\n\n<li><a href=\"#bp-waarom-het-ertoe-doet\">Warum RDW wichtig ist<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-je-waarde-zegt\">Was Ihr RDW-Wert aussagt<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-het-beinvloedt\">Was Ihren RDW-Wert beeinflusst<\/a><\/li>\n\n\n<li><a href=\"#bp-welke-pakketten\">Welche BioProfile-Pakete RDW 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>RDW misst, wie stark sich Ihre roten Blutk\u00f6rperchen in Gr\u00f6\u00dfe und Volumen voneinander unterscheiden.<sup>[2]<\/sup><\/li>\n\n\n<li>Eine hohe RDW kann auf eine Erkrankung hinweisen, eine niedrige RDW ist meist kein Grund zur Sorge.<sup>[2]<\/sup><\/li>\n\n\n<li>Bei Erwachsenen ab 45 Jahren ging jede um 1% h\u00f6here RDW mit einem um 22% h\u00f6heren Sterberisiko einher.<sup>[1]<\/sup><\/li>\n\n\n<li>Ihr Arzt betrachtet die RDW meist zusammen mit den Ergebnissen anderer Bluttests.<sup>[2]<\/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-rdw\">Was ist RDW?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">RDW steht f\u00fcr die Verteilungsbreite Ihrer roten Blutk\u00f6rperchen. Der Test misst, wie stark sich diese Zellen in Gr\u00f6\u00dfe und Volumen unterscheiden. Rote Blutk\u00f6rperchen werden in Ihrem Knochenmark gebildet. Sie enthalten H\u00e4moglobin, ein eisenhaltiges Eiwei\u00df, das Sauerstoff von Ihrer Lunge zu jeder Zelle Ihres K\u00f6rpers bringt.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Normalerweise sind Ihre roten Blutk\u00f6rperchen ungef\u00e4hr gleich gro\u00df. Das Labor tr\u00e4gt die Gr\u00f6\u00dfe in einer Grafik auf. Liegen die Zellen dicht beieinander, ist die RDW niedrig. Liegen sie weiter auseinander, ist die RDW hoch.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Die RDW ist oft Teil des gro\u00dfen Blutbilds. Der Wert steht meist als Prozentangabe in Ihrem Ergebnis und wird mit einem Referenzbereich verglichen. Dieser Referenzbereich kann von Labor zu Labor verschieden sein.<sup>[2]<\/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 RDW wichtig ist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Unterschiede in der Gr\u00f6\u00dfe Ihrer roten Blutk\u00f6rperchen k\u00f6nnen beeinflussen, wie gut sie Sauerstoff durch Ihren K\u00f6rper transportieren. Deshalb hilft RDW einem Arzt, nach der Ursache einer Blutarmut zu suchen.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ein Arzt kann den Test bei Beschwerden anordnen, die zu einer Blutarmut passen, etwa Kurzatmigkeit, Schw\u00e4che oder M\u00fcdigkeit, Kopfschmerzen, Schwindel oder ein unregelm\u00e4\u00dfiger Herzschlag. Auch kann die RDW zusammen mit anderen Tests bei einer erblichen Erkrankung des Blutes helfen.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Eine Studie bei Erwachsenen ab 45 Jahren sah die RDW als starken Vorhersagefaktor f\u00fcr das Sterberisiko in der Allgemeinbev\u00f6lkerung. Dieser Zusammenhang blieb auch bei Menschen ohne Blutarmut bestehen.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Auch eine normale RDW sagt nicht alles. Ihre roten Blutk\u00f6rperchen k\u00f6nnen dann trotzdem gr\u00f6\u00dfer oder kleiner sein als gew\u00f6hnlich, und Sie k\u00f6nnen dennoch eine Blutarmut haben.<sup>[2]<\/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 RDW-Wert 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, gibt f\u00fcr die RDW keine Zahl als Grenze an. Das Labor nennt es eine qualitative Bestimmung. Einen Wert innerhalb der Grenzen nennt das Labor normal.<sup>[3]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Studie von Patel und Kollegen<\/h3>\n\n\n\n<figure class=\"wp-block-table bp-bm-table\"><table><thead><tr><th>Wert<\/th><th>Was es bedeuten kann<\/th><th>F\u00fcr wen<\/th><\/tr><\/thead><tbody><tr><td>11% bis 15%<sup>[1]<\/sup><\/td><td>Der Referenzbereich in dieser Studie. Auch innerhalb dieses Referenzbereichs ging eine h\u00f6here RDW mit einem h\u00f6heren Sterberisiko einher.<\/td><td>Erwachsene ab 45 Jahren ohne Mangel an Eisen, Fols\u00e4ure oder Vitamin B12<\/td><\/tr><tr><td>Je 1% h\u00f6her<sup>[1]<\/sup><\/td><td>Ein um 22% h\u00f6heres Sterberisiko<\/td><td>Erwachsene ab 45 Jahren in der Allgemeinbev\u00f6lkerung<\/td><\/tr><tr><td>H\u00f6chstes F\u00fcnftel der Werte<sup>[1]<\/sup><\/td><td>Risikoverh\u00e4ltnis 2,1 f\u00fcr Sterblichkeit, verglichen mit dem niedrigsten F\u00fcnftel<\/td><td>Erwachsene ab 45 Jahren in der Allgemeinbev\u00f6lkerung<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"bp-bm-caption wp-block-paragraph\">Quelle: Patel und Kollegen, Archives of Internal Medicine. Eine landesweite Studie mit 8175 Erwachsenen ab 45 Jahren. Es geht um Gruppen, nicht um eine einzelne Person.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">RDW zu niedrig<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Eine niedrige RDW bedeutet, dass Ihre roten Blutk\u00f6rperchen ungef\u00e4hr gleich gro\u00df sind. Das ist kein Zeichen einer Blutarmut und meist kein Grund zur Sorge.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">RDW zu hoch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Eine hohe RDW bedeutet, dass sich Ihre roten Blutk\u00f6rperchen st\u00e4rker in der Gr\u00f6\u00dfe unterscheiden als normal. Das kann auf eine langwierige Erkrankung der Leber hinweisen, auf eine Erkrankung des Herzens oder der Nieren, eine St\u00f6rung des Blutzuckers oder eine b\u00f6sartige Erkrankung, vor allem des Dickdarms. Ihr Arzt schaut sich dann auch Ihre anderen Blutwerte an.<sup>[2]<\/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 RDW-Wert beeinflusst<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Ern\u00e4hrung<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nehmen Sie mit der Nahrung wenig Eisen und andere Mineralstoffe auf, kann ein Arzt die RDW messen lassen. Zusammen mit anderen Blutwerten kann die RDW helfen, einen Eisenmangel aufzusp\u00fcren.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Blutverlust<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Starker Blutverlust durch eine Wunde oder eine Operation ist ein Grund, RDW zu messen.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Erbliche Veranlagung und langwierige Krankheit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kommt in Ihrer Familie eine erbliche Erkrankung des Blutes vor oder haben Sie eine langwierige Krankheit, zum Beispiel des Darms, kann ein Arzt die RDW messen lassen.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vorbereitung und Labor<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sie m\u00fcssen sich auf den Test nicht besonders vorbereiten. Der Referenzbereich kann allerdings von Labor zu Labor verschieden sein.<sup>[2]<\/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 RDW messen<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">RDW ist in allen f\u00fcnf Paketen enthalten, von BioProfile 31 bis BioProfile 150.<sup>[4]<\/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\/haemoglobin\/\">H\u00e4moglobin<\/a>: das Eiwei\u00df in Ihren roten Blutk\u00f6rperchen, das Sauerstoff transportiert, sodass Sie neben der Gr\u00f6\u00dfe auch den Sauerstofftr\u00e4ger sehen.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/leukozyten\/\">Leukozyten<\/a>: Auch diese Zellen z\u00e4hlt das gro\u00dfe Blutbild, zu dem die RDW oft geh\u00f6rt.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/erythrozyten\/\">Erythrozyten<\/a>: die Anzahl der roten Blutk\u00f6rperchen, neben der RDW, die zeigt, wie stark sie sich in der Gr\u00f6\u00dfe unterscheiden.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/thrombozyten\/\">Thrombozyten<\/a>: ein weiterer Zelltyp, den das gro\u00dfe Blutbild misst, zusammen mit der RDW.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/de\/biomarkers\/haematokrit\/\">H\u00e4matokrit<\/a>: ein weiterer Blutwert, den Ihr Arzt zusammen mit der RDW betrachten kann, sodass gemeinsam ein vollst\u00e4ndigeres Bild Ihrer roten Blutk\u00f6rperchen entsteht.<sup>[2]<\/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 3. Oktober 2026 auf Grundlage der unten genannten Quellen verfasst, die wir am 3. Oktober 2026 gelesen haben. Jede Zahl auf dieser Seite steht in einer dieser Quellen, jeweils mit der Nummer der Quelle. 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 abweichenden Wert mit Ihrer Hausarztpraxis.<\/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>Patel KV, Ferrucci L, Ershler WB, et al. Red blood cell distribution width and the risk of death in middle-aged and older adults. Arch Intern Med. 2009;169(5):515-23. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19273783\/\" target=\"_blank\" rel=\"noopener\">https:\/\/pubmed.ncbi.nlm.nih.gov\/19273783\/<\/a><\/li>\n\n\n<li>MedlinePlus, U.S. National Library of Medicine. RDW (Red Cell Distribution Width). Abgerufen am 3. Oktober 2026. <a href=\"https:\/\/medlineplus.gov\/lab-tests\/rdw-red-cell-distribution-width\/\" target=\"_blank\" rel=\"noopener\">https:\/\/medlineplus.gov\/lab-tests\/rdw-red-cell-distribution-width\/<\/a><\/li>\n\n\n<li>Labplusarts, das Labor, mit dem BioProfile zusammenarbeitet: Referenzwert bei der Bestimmung rdw (RDW). 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 RDW RDW: was Ihr Wert \u00fcber Ihre roten Blutk\u00f6rperchen aussagt In einer landesweiten Studie mit 8175 Erwachsenen ab 45 Jahren ging eine h\u00f6here RDW stark mit einem h\u00f6heren Sterberisiko einher. Das galt auch f\u00fcr Menschen ohne Blutarmut.[1] Auf dieser Seite lesen Sie, was RDW ist, was die Leitlinien \u00fcber einen zu [&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":"RDW-Blutwert: was er aussagt | BioProfile","_yoast_wpseo_metadesc":"Die RDW zeigt, wie stark sich Ihre roten Blutk\u00f6rperchen in der Gr\u00f6\u00dfe unterscheiden. 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