{"id":8384,"date":"2026-10-03T10:00:00","date_gmt":"2026-10-03T10:00:00","guid":{"rendered":"https:\/\/bioprofile.com\/?page_id=8384"},"modified":"2026-10-03T11:20:25","modified_gmt":"2026-10-03T11:20:25","slug":"vitamin-d","status":"publish","type":"page","link":"https:\/\/bioprofile.com\/de\/biomarkers\/vitamin-d\/","title":{"rendered":"Vitamin D (25-OH)"},"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. 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Vitamine D. Geraadpleegd op 1 oktober 2026.\",\"url\":\"https:\/\/www.voedingscentrum.nl\/encyclopedie\/vitamine-d.aspx\"},{\"@type\":\"CreativeWork\",\"name\":\"Nwosu BU. Vitamin D for the prevention of diseases in children: A rebuttal to the 2024 Endocrine Society Clinical Practice Guideline. Front Endocrinol (Lausanne). 2025;16:1578609.\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40510464\/\"},{\"@type\":\"CreativeWork\",\"name\":\". Correction to: \\\"Evaluation, Treatment, and Prevention of Vitamin D Deficiency: An Endocrine Society Clinical Practice Guideline\\\". J Clin Endocrinol Metab. 2024;109(10):e1991.\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/38838193\/\"},{\"@type\":\"CreativeWork\",\"name\":\"Labplusarts, het laboratorium waarmee BioProfile werkt: referentiewaarde bij de bepaling vitamine d (25-oh) (VD3), 50 tot 150 nmol\/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\/vitamine-d\/#biomarker\",\"name\":\"Vitamine D (25-OH)\",\"alternateName\":[\"Vitamin D (25-OH)\"]}]}<\/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>Vitamin D (25-OH)<\/span><\/p>\n\n\n\n<h1 class=\"wp-block-heading bp-adv-h1\">Vitamin D (25-OH)<\/h1>\n\n\n\n<p class=\"bp-adv-standfirst wp-block-paragraph\">Menschen \u00fcber 70 brauchen 20 Mikrogramm Vitamin D pro Tag, w\u00e4hrend f\u00fcr alle eine empfohlene Tagesmenge von 10 Mikrogramm gilt. In Ihrem Blut wird Vitamin D als 25-Hydroxyvitamin D gemessen.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"bp-adv-lede wp-block-paragraph\">Auf dieser Seite lesen Sie, was Vitamin D (25-OH) 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: 25-Hydroxyvitamin D. Im Labor: VD3.<\/p>\n\n\n\n<p class=\"bp-adv-byline wp-block-paragraph\">Aktualisiert am 1. 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-vitamine-d\">Was ist Vitamin D (25-OH)?<\/a><\/li>\n\n\n<li><a href=\"#bp-waarom-het-ertoe-doet\">Warum Vitamin D wichtig ist<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-je-waarde-zegt\">Was Ihr Vitamin-D-Wert aussagt<\/a><\/li>\n\n\n<li><a href=\"#bp-wat-het-beinvloedt\">Was Ihr Vitamin D (25-OH) beeinflusst<\/a><\/li>\n\n\n<li><a href=\"#bp-welke-pakketten\">Welche BioProfile-Pakete Vitamin D (25-OH) 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>Vitamin D ist wichtig f\u00fcr das Wachstum und den Erhalt fester Knochen und Z\u00e4hne und spielt eine Rolle f\u00fcr die normale Funktion der Muskeln und des Immunsystems.<sup>[1]<\/sup><\/li>\n\n\n<li>In der Leber wird Vitamin D in 25-Hydroxyvitamin D umgewandelt, und das ist die Form, mit der bei der Blutabnahme bestimmt wird, ob ein Mangel an Vitamin D besteht.<sup>[1]<\/sup><\/li>\n\n\n<li>Sonnenlicht ist die wichtigste Quelle f\u00fcr Vitamin D, au\u00dferdem steckt Vitamin D in der Nahrung, vor allem in fettem Fisch.<sup>[1]<\/sup><\/li>\n\n\n<li>Eine \u00dcbersichtsarbeit aus dem Jahr 2025 widerspricht den Empfehlungen der Leitlinie der Endocrine Society von 2024 f\u00fcr Babys, Kinder, Jugendliche, Schwangere und Menschen mit dunkler Haut und pl\u00e4diert f\u00fcr ein individuell abgestimmtes Screening und eine individuell abgestimmte Supplementierung.<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-vitamine-d\">Was ist Vitamin D (25-OH)?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin D ist ein fettl\u00f6sliches Vitamin. Es ist eines der wenigen Vitamine, die der K\u00f6rper selbst bilden kann: Unter dem Einfluss von Sonnenlicht wird Vitamin D in der Haut gebildet. Au\u00dferdem nehmen Sie Vitamin D \u00fcber Ihre Nahrung auf.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In der Leber wird Vitamin D in 25-Hydroxyvitamin D umgewandelt, kurz 25-OH. Diese Form ist im K\u00f6rper selbst nicht aktiv, wird bei der Blutabnahme aber verwendet, um zu bestimmen, ob ein Mangel an Vitamin D besteht. In den Nieren wird 25-Hydroxyvitamin D danach in 1,25-Dihydroxyvitamin D umgewandelt, die aktive Form.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In unserer Nahrung kommt Vitamin D in zwei Formen vor: Ergocalciferol (Vitamin D2) und Cholecalciferol (Vitamin D3). Vitamin D2 wird in bestimmten Pilzen und Schimmelpilzen gebildet, Vitamin D3 in der Haut von Menschen und Tieren. Beide Formen sind aktiv, wobei Vitamin D3 etwas st\u00e4rker wirkt.<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 Vitamin D wichtig ist<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin D sorgt daf\u00fcr, dass Calcium und Phosphor aus Ihrer Nahrung gut aufgenommen und w\u00e4hrend des Wachstums in Knochen und Z\u00e4hnen eingelagert werden. So sorgt Vitamin D f\u00fcr feste Knochen und Z\u00e4hne.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin D ist n\u00f6tig, um den Verlust von Kalk aus den Knochen so weit wie m\u00f6glich zu begrenzen und so das Risiko einer Erkrankung der Knochen im sp\u00e4teren Alter zu verringern. Au\u00dferdem spielt Vitamin D eine wichtige Rolle beim Erhalt einer guten Muskelfunktion und ist wichtig f\u00fcr eine gute Funktion des Immunsystems.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nicht alles ist belegt. Dass ein Vitamin-D-Pr\u00e4parat das Risiko f\u00fcr h\u00e4ufige Erkrankungen der Atemwege senkt, ist noch nicht ausreichend belegt.<sup>[1]<\/sup><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Die Leitlinien zu Vitamin D sind im Wandel. Zur klinischen Leitlinie der Endocrine Society \u00fcber einen Mangel an Vitamin D erschien 2024 eine Korrektur im Journal of Clinical Endocrinology and Metabolism.<sup>[3]<\/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 Vitamin-D-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\">Labplusarts, das Labor, mit dem BioProfile zusammenarbeitet, legt f\u00fcr Vitamin D (25-OH) einen Referenzwert von 50 bis 150 nmol\/l zugrunde. Einen Wert innerhalb dieser Grenzen bezeichnet das Labor als normal.<sup>[4]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Die Grenzwerte von Labplusarts im \u00dcberblick<\/h3>\n\n\n\n<figure class=\"wp-block-table bp-bm-table\"><table><thead><tr><th>Wert<\/th><th>Was das Labor dazu sagt<\/th><th>F\u00fcr wen<\/th><\/tr><\/thead><tbody><tr><td>50 bis 150 nmol\/l<sup>[4]<\/sup><\/td><td>Das Labor nennt einen Wert zwischen diesen Grenzen normal<\/td><td>Alle, bei denen Labplusarts diesen Wert bestimmt<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"bp-bm-caption wp-block-paragraph\">Referenzwert von Labplusarts, dem Labor, mit dem BioProfile zusammenarbeitet, f\u00fcr Vitamin D (25-OH) (VD3). Liste vom 24. September 2026.<sup>[4]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vitamin D zu niedrig<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ein niedriger Wert kann auf einen Mangel an Vitamin D hinweisen, denn 25-Hydroxyvitamin D wird bei der Blutabnahme genau daf\u00fcr verwendet, das zu bestimmen. Sonnenlicht ist die wichtigste Quelle, und in den Wintermonaten steht die Sonne in den Niederlanden zu tief, um Vitamin D zu bilden. F\u00fcr kleine Kinder, \u00e4ltere Menschen, Schwangere, Menschen mit dunkler Hautfarbe und Menschen, die wenig nach drau\u00dfen kommen, gilt die Empfehlung, ein Vitamin-D-Pr\u00e4parat einzunehmen.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vitamin D zu hoch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Auch nach oben gibt es eine Grenze. F\u00fcr Produkte, denen in den Niederlanden Vitamin D zugesetzt wird, gilt ein H\u00f6chstwert von 4,5 Mikrogramm pro 100 Kilokalorien, damit die Aufnahme nicht zu hoch wird. F\u00fcr ein Pr\u00e4parat legt das Voedingscentrum die empfohlene Tagesmenge von 10 Mikrogramm pro Tag zugrunde.<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 Ihr Vitamin D (25-OH) beeinflusst<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Sonnenlicht und die Jahreszeit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Den gr\u00f6\u00dften Teil des Vitamin D bilden Sie selbst in der Haut, unter dem Einfluss von Sonnenlicht. Die Empfehlung lautet, von M\u00e4rz bis einschlie\u00dflich Oktober jeden Tag zwischen 11.00 und 15.00 Uhr eine Viertelstunde bis eine halbe Stunde drau\u00dfen zu sein, mit unbedecktem Gesicht und unbedeckten H\u00e4nden. In den Wintermonaten steht die Sonne in den Niederlanden zu tief, um Vitamin D zu bilden, und Sie greifen auf den Vorrat zur\u00fcck, den Sie angelegt haben.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Was Sie essen<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin D kommt von Natur aus in fettem Fisch wie Hering und Lachs vor. Auch Fleisch und Eier enthalten Vitamin D, aber weniger als fetter Fisch. In den Niederlanden wird Vitamin D Halbfettmargarine, Margarine sowie Back- und Bratfetten zugesetzt, nicht aber \u00d6l. Ein St\u00fcck Forelle von 100 Gramm liefert 9,4 Mikrogramm und ein gekochtes Ei von 50 Gramm 0,9 Mikrogramm.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fett zur Mahlzeit und der Vorrat in Ihrem K\u00f6rper<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin D wird im Darm am besten aufgenommen, wenn auch Fett oder \u00d6l vorhanden ist. Die durchschnittliche Aufnahme von Vitamin D aus der Nahrung wird auf 80 % gesch\u00e4tzt. Der K\u00f6rper kann Vitamin D im Fettgewebe und in Organen wie der Leber speichern.<sup>[1]<\/sup><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ihre Haut, Ihr Alter und wie oft Sie nach drau\u00dfen kommen<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lassen Sie mehr Haut unbedeckt, bilden Sie schneller Vitamin D, und bleiben Sie l\u00e4nger drau\u00dfen, bildet Ihre Haut auch mehr davon. F\u00fcr kleine Kinder, \u00e4ltere Menschen, Schwangere, Menschen mit dunkler Hautfarbe und Menschen, die wenig nach drau\u00dfen kommen, gilt die Empfehlung, ein Vitamin-D-Pr\u00e4parat einzunehmen.<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 Vitamin D (25-OH) messen<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vitamin D (25-OH) ist in allen f\u00fcnf Paketen enthalten, von BioProfile 31 bis BioProfile 150.<sup>[5]<\/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><strong>Alkalische Phosphatase<\/strong>: bietet einen zweiten Zugang zu Ihren Knochen, denn Vitamin D sorgt daf\u00fcr, dass Calcium und Phosphor aus Ihrer Nahrung w\u00e4hrend des Wachstums in Knochen und Z\u00e4hnen eingelagert werden.<sup>[1]<\/sup><\/li>\n\n\n<li><strong>Vitamin B12<\/strong>: stellt Ihr Ergebnis in ein breiteres Bild Ihrer Vitamine, denn Vitamin D ist eines der wenigen Vitamine, die der K\u00f6rper unter dem Einfluss von Sonnenlicht selbst bilden kann.<sup>[1]<\/sup><\/li>\n\n\n<li><strong>Fols\u00e4ure<\/strong>: geh\u00f6rt zum selben gr\u00f6\u00dferen Bild, w\u00e4hrend Sie Vitamin D vor allem \u00fcber das Sonnenlicht und zum Teil \u00fcber Ihre Nahrung bekommen, etwa \u00fcber fetten Fisch.<sup>[1]<\/sup><\/li>\n\n\n<li><strong>Homocystein<\/strong>: ein Wert, den Sie neben Ihre Vitamine legen, w\u00e4hrend Vitamin D zuerst in der Leber in 25-Hydroxyvitamin D umgewandelt wird und danach in den Nieren in die aktive Form.<sup>[1]<\/sup><\/li>\n\n\n<li><strong>Korrigiertes Calcium<\/strong>: steht diesem Wert am n\u00e4chsten, denn Vitamin D sorgt daf\u00fcr, dass Calcium aus Ihrer Nahrung gut aufgenommen und in Knochen und Z\u00e4hnen eingelagert wird.<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 1. Oktober 2026 auf Grundlage der unten genannten Quellen geschrieben, die wir am 1. 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 abweichenden 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>Voedingscentrum. Vitamin D. Abgerufen am 1. Oktober 2026. <a href=\"https:\/\/www.voedingscentrum.nl\/encyclopedie\/vitamine-d.aspx\" target=\"_blank\" rel=\"noopener\">https:\/\/www.voedingscentrum.nl\/encyclopedie\/vitamine-d.aspx<\/a><\/li>\n\n\n<li>Nwosu BU. Vitamin D for the prevention of diseases in children: A rebuttal to the 2024 Endocrine Society Clinical Practice Guideline. Front Endocrinol (Lausanne). 2025;16:1578609. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40510464\/\" target=\"_blank\" rel=\"noopener\">https:\/\/pubmed.ncbi.nlm.nih.gov\/40510464\/<\/a><\/li>\n\n\n<li>. Correction to: \"Evaluation, Treatment, and Prevention of Vitamin D Deficiency: An Endocrine Society Clinical Practice Guideline\". J Clin Endocrinol Metab. 2024;109(10):e1991. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/38838193\/\" target=\"_blank\" rel=\"noopener\">https:\/\/pubmed.ncbi.nlm.nih.gov\/38838193\/<\/a><\/li>\n\n\n<li>Labplusarts, das Labor, mit dem BioProfile zusammenarbeitet: Referenzwert bei der Bestimmung vitamine d (25-oh) (VD3), 50 bis 150 nmol\/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 Vitamin D (25-OH) Vitamin D (25-OH) Menschen \u00fcber 70 brauchen 20 Mikrogramm Vitamin D pro Tag, w\u00e4hrend f\u00fcr alle eine empfohlene Tagesmenge von 10 Mikrogramm gilt. In Ihrem Blut wird Vitamin D als 25-Hydroxyvitamin D gemessen.[1] Auf dieser Seite lesen Sie, was Vitamin D (25-OH) ist, was die Leitlinien \u00fcber einen [&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":"Vitamin D (25-OH) in Ihrem Blut | BioProfile","_yoast_wpseo_metadesc":"Was Vitamin D in Ihrem Blut ist, was ein zu niedriger oder zu hoher Wert bedeuten kann, was Ihren Wert beeinflusst und welche Werte Sie am besten daneben betrachten.","_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-8384","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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