{"id":8631,"date":"2026-10-05T15:00:00","date_gmt":"2026-10-05T15:00:00","guid":{"rendered":"https:\/\/bioprofile.com\/?page_id=8631"},"modified":"2026-10-05T15:32:58","modified_gmt":"2026-10-05T15:32:58","slug":"rdw","status":"publish","type":"page","link":"https:\/\/bioprofile.com\/es\/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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Esto tambi\u00e9n se cumpl\u00eda en personas sin anemia.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"bp-adv-lede wp-block-paragraph\">En esta p\u00e1gina ver\u00e1s qu\u00e9 es el RDW, qu\u00e9 dicen las gu\u00edas sobre un valor demasiado bajo o demasiado alto, qu\u00e9 influye en tu valor y qu\u00e9 otros valores conviene mirar junto a \u00e9l.<\/p>\n\n\n\n<p class=\"bp-bm-names wp-block-paragraph\">Tambi\u00e9n llamado: amplitud de distribuci\u00f3n de los gl\u00f3bulos rojos, amplitud de distribuci\u00f3n eritrocitaria, RDW-SD. En el laboratorio: RDW.<\/p>\n\n\n\n<p class=\"bp-adv-byline wp-block-paragraph\">Actualizado el 3 de octubre de 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\">En esta p\u00e1gina<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li><a href=\"#bp-in-het-kort\">En resumen<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-is-rdw\">\u00bfQu\u00e9 es el RDW?<\/a><\/li>\n\n\n<li><a href=\"#bp-waarom-het-ertoe-doet\">Por qu\u00e9 importa el RDW<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-je-waarde-zegt\">Qu\u00e9 dice tu valor de RDW<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-het-beinvloedt\">Qu\u00e9 influye en tu RDW<\/a><\/li>\n\n\n<li><a href=\"#bp-welke-pakketten\">Qu\u00e9 paquetes de BioProfile miden el RDW<\/a><\/li>\n\n\n<li><a href=\"#bp-waarden-die-erbij-horen\">Valores relacionados<\/a><\/li>\n\n\n<li><a href=\"#bp-hoe-gemaakt\">C\u00f3mo se ha hecho esta p\u00e1gina<\/a><\/li>\n\n\n<li><a href=\"#bp-bronnen\">Fuentes<\/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\">En resumen<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n\n<li>El RDW mide cu\u00e1nto se diferencian entre s\u00ed tus gl\u00f3bulos rojos en tama\u00f1o y volumen.<sup>[2]<\/sup><\/li>\n\n\n<li>Un RDW alto puede indicar una enfermedad, un RDW bajo no suele ser motivo de preocupaci\u00f3n.<sup>[2]<\/sup><\/li>\n\n\n<li>En adultos de 45 a\u00f1os o m\u00e1s, cada 1% m\u00e1s de RDW se asoci\u00f3 con un riesgo de morir un 22% mayor.<sup>[1]<\/sup><\/li>\n\n\n<li>Tu m\u00e9dico suele valorar el RDW junto con los resultados de otros an\u00e1lisis de sangre.<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\">\u00bfQu\u00e9 es el RDW?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">RDW son las siglas en ingl\u00e9s de la amplitud de distribuci\u00f3n de tus gl\u00f3bulos rojos. La prueba mide cu\u00e1nto var\u00edan esas c\u00e9lulas en tama\u00f1o y volumen. Los gl\u00f3bulos rojos se forman en tu m\u00e9dula \u00f3sea. Contienen hemoglobina, una prote\u00edna con hierro que lleva el ox\u00edgeno de tus pulmones a cada c\u00e9lula de tu cuerpo.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Normalmente, tus gl\u00f3bulos rojos tienen m\u00e1s o menos el mismo tama\u00f1o. El laboratorio representa el tama\u00f1o en un gr\u00e1fico. Si las c\u00e9lulas quedan cerca unas de otras, el RDW es bajo. Si quedan m\u00e1s separadas, el RDW es alto.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El RDW suele formar parte del hemograma completo. Normalmente aparece como porcentaje en tu resultado y se compara con un rango de referencia. Ese rango puede variar de un laboratorio a otro.<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\">Por qu\u00e9 importa el RDW<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Las diferencias de tama\u00f1o entre tus gl\u00f3bulos rojos pueden influir en lo bien que llevan el ox\u00edgeno por tu cuerpo. Por eso el RDW ayuda a un m\u00e9dico a buscar la causa de una anemia.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un m\u00e9dico puede pedir la prueba ante s\u00edntomas que encajan con la anemia, como falta de aire, debilidad o cansancio, dolor de cabeza, mareos o un latido del coraz\u00f3n que no es regular. Junto con otras pruebas, el RDW tambi\u00e9n puede ayudar en un trastorno hereditario de la sangre.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un estudio en adultos de 45 a\u00f1os o m\u00e1s vio el RDW como un fuerte predictor del riesgo de morir en la poblaci\u00f3n general. Esta relaci\u00f3n se mantuvo tambi\u00e9n en personas sin anemia.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un RDW normal tampoco lo dice todo. Tus gl\u00f3bulos rojos pueden seguir siendo m\u00e1s grandes o m\u00e1s peque\u00f1os de lo habitual, y aun as\u00ed puedes tener anemia.<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\">Lo que dice tu valor de RDW<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">La directriz del laboratorio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">El laboratorio con el que trabaja BioProfile, Labplusarts, no da ninguna cifra como l\u00edmite para el RDW. El laboratorio lo llama una determinaci\u00f3n cualitativa. A un valor dentro de los l\u00edmites lo llama normal.<sup>[3]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Estudio de Patel y colaboradores<\/h3>\n\n\n\n<figure class=\"wp-block-table bp-bm-table\"><table><thead><tr><th>Valor<\/th><th>Qu\u00e9 puede significar<\/th><th>Para qui\u00e9n<\/th><\/tr><\/thead><tbody><tr><td>11% al 15%<sup>[1]<\/sup><\/td><td>El rango de referencia de este estudio. Incluso dentro de este rango, un RDW m\u00e1s alto se asoci\u00f3 con un mayor riesgo de morir.<\/td><td>Adultos de 45 a\u00f1os o m\u00e1s sin carencia de hierro, \u00e1cido f\u00f3lico o vitamina B12<\/td><\/tr><tr><td>Cada 1% m\u00e1s<sup>[1]<\/sup><\/td><td>Un riesgo de morir un 22% mayor<\/td><td>Adultos de 45 a\u00f1os o m\u00e1s de la poblaci\u00f3n general<\/td><\/tr><tr><td>La quinta parte m\u00e1s alta de los valores<sup>[1]<\/sup><\/td><td>Raz\u00f3n de riesgo de 2,1 para la muerte, frente a la quinta parte m\u00e1s baja<\/td><td>Adultos de 45 a\u00f1os o m\u00e1s de la poblaci\u00f3n general<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"bp-bm-caption wp-block-paragraph\">Fuente: Patel y colaboradores, Archives of Internal Medicine. Un estudio nacional con 8175 adultos de 45 a\u00f1os o m\u00e1s. Habla de grupos, no de una sola persona.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">RDW demasiado bajo<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un RDW bajo significa que tus gl\u00f3bulos rojos tienen m\u00e1s o menos el mismo tama\u00f1o. No es una se\u00f1al de anemia y no suele ser motivo de preocupaci\u00f3n.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">RDW demasiado alto<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un RDW alto significa que tus gl\u00f3bulos rojos se diferencian en tama\u00f1o m\u00e1s de lo normal. Puede indicar una enfermedad del h\u00edgado de larga duraci\u00f3n, una enfermedad del coraz\u00f3n o de los ri\u00f1ones, un trastorno del az\u00facar en sangre o una enfermedad maligna, sobre todo del colon. En ese caso, tu m\u00e9dico tambi\u00e9n mira tus otros valores en sangre.<sup>[2]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BioProfile est\u00e1 trabajando en sus propias zonas para cada valor, de riesgo a \u00f3ptimo. Un m\u00e9dico valora esas zonas antes de que aparezcan en tu resultado.<\/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\">Qu\u00e9 influye en tu RDW<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Alimentaci\u00f3n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Si comes poco hierro y otros minerales, un m\u00e9dico puede pedir que te midan el RDW. Junto con otros valores en sangre, el RDW puede ayudar a detectar la falta de hierro.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">P\u00e9rdida de sangre<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Perder mucha sangre por una herida o una operaci\u00f3n es un motivo para medir el RDW.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Predisposici\u00f3n hereditaria y enfermedad de larga duraci\u00f3n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Si en tu familia hay un trastorno hereditario de la sangre, o tienes una enfermedad de larga duraci\u00f3n, por ejemplo de los intestinos, un m\u00e9dico puede pedir que te midan el RDW.<sup>[2]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Preparaci\u00f3n y laboratorio<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No necesitas prepararte de ninguna forma especial para la prueba. Eso s\u00ed, el rango de referencia puede variar de un laboratorio a otro.<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\">Qu\u00e9 paquetes de BioProfile miden el RDW<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El RDW est\u00e1 en los cinco paquetes, de BioProfile 31 a 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\/es\/analisis-de-sangre\/\">Ver los paquetes<\/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\">Valores que la acompa\u00f1an<\/h2>\n\n\n\n<ul class=\"wp-block-list bp-bm-related\">\n\n<li><a href=\"https:\/\/bioprofile.com\/es\/biomarkers\/hemoglobina\/\">Hemoglobina<\/a>: la prote\u00edna de tus gl\u00f3bulos rojos que transporta el ox\u00edgeno, para que adem\u00e1s del tama\u00f1o veas tambi\u00e9n lo que lleva el ox\u00edgeno.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/es\/biomarkers\/leucocitos\/\">Leucocitos<\/a>: el hemograma completo, del que el RDW suele formar parte, tambi\u00e9n cuenta estas c\u00e9lulas.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/es\/biomarkers\/eritrocitos\/\">Eritrocitos<\/a>: el n\u00famero de gl\u00f3bulos rojos, junto al RDW, que muestra cu\u00e1nto se diferencian en tama\u00f1o.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/es\/biomarkers\/trombocitos\/\">Plaquetas<\/a>: otro tipo de c\u00e9lula que mide el hemograma completo, junto con el RDW.<sup>[2]<\/sup><\/li>\n\n\n<li><a href=\"https:\/\/bioprofile.com\/es\/biomarkers\/hematocrito\/\">Hematocrito<\/a>: otro valor en sangre que tu m\u00e9dico puede mirar junto al RDW, para que entre los dos den una imagen m\u00e1s completa de tus gl\u00f3bulos rojos.<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\">C\u00f3mo se ha hecho esta p\u00e1gina<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La redacci\u00f3n de BioProfile escribi\u00f3 esta p\u00e1gina el 3 de octubre de 2026 a partir de las fuentes que aparecen abajo, que le\u00edmos el 3 de octubre de 2026. Cada cifra de esta p\u00e1gina aparece en una de esas fuentes, junto con el n\u00famero de la fuente. Una persona experta a\u00fan tiene que revisar esta p\u00e1gina; tras esa revisi\u00f3n, el nombre de esa persona y la fecha de la revisi\u00f3n aparecer\u00e1n arriba. Esta p\u00e1gina explica y no da un diagn\u00f3stico. Habla de cualquier valor fuera de lo normal con tu m\u00e9dico de cabecera.<\/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\">Fuentes<\/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). Consultado el 3 de octubre de 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, el laboratorio con el que trabaja BioProfile: valor de referencia de la determinaci\u00f3n rdw (RDW). Lista del 24 de septiembre de 2026.<\/li>\n\n\n<li>BioProfile, los paquetes del an\u00e1lisis de sangre y los valores de cada paquete. <a href=\"https:\/\/bioprofile.com\/es\/analisis-de-sangre\/\" target=\"_blank\" rel=\"noopener\">https:\/\/bioprofile.com\/es\/analisis-de-sangre\/<\/a><\/li>\n\n<\/ol>\n\n<\/div>\n\n<\/section>\n\n","protected":false},"excerpt":{"rendered":"<p>Inicio \u203a Biomarcadores \u203a RDW RDW: lo que tu valor dice de tus gl\u00f3bulos rojos En un estudio nacional con 8175 adultos de 45 a\u00f1os o m\u00e1s, un RDW m\u00e1s alto se asoci\u00f3 con fuerza a un mayor riesgo de morir. Esto tambi\u00e9n se cumpl\u00eda en personas sin anemia.[1] En esta p\u00e1gina ver\u00e1s qu\u00e9 es [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":0,"parent":6604,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_yoast_wpseo_title":"Valor de RDW en sangre: qu\u00e9 indica | BioProfile","_yoast_wpseo_metadesc":"El RDW muestra cu\u00e1nto se diferencian en tama\u00f1o tus gl\u00f3bulos rojos. 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