Vitamin D, 25-OH, Total
Vitamins
24 ng/mL
low
Below your lab's range.
No target beyond the lab's range. Why not?
Previous: 31 ng/mL in Nov 2025 · 4 readings since Nov 2024, lowest 24, highest 34
Down 23% since Nov 2025: more than its normal variation, so likely a real change.
i
Every marker varies a little from one blood test to the next, even when nothing about your health has changed: the time of day, what you ate, how the sample was handled. Studies of healthy people measure how much. For this marker it's about 6.3% within one person (Cavalier et al., Nutrients 2021 (EFLM BV database)). Adding a typical lab's measuring error, a move smaller than about 20% between two draws is within that normal wobble. Only a bigger move is likely a real change, so that's the only kind Helse calls “better” or “worse.”Research note · randomised trial · VITAL trial, NEJM 2019: In the VITAL trial, nearly 26,000 US men aged 50 and over and women 55 and over with no history of cancer or cardiovascular disease took vitamin D (2,000 IU a day) or placebo for about five years; the supplement did not lower their rate of invasive cancer or major cardiovascular events (heart attack, stroke, cardiovascular death).
Lab reference rangeOutside the lab's range
Colours blend near each line
i
One blood test can land a little above or below your usual level for reasons that aren't about your health — for this test, within about ±14%. That's its published variation — Cavalier et al., Nutrients 2021 (EFLM BV database) — plus a typical lab's measuring error. So close to a line, one result can't say which side your usual level is on, and the colours mix in proportion to how likely each side is. Further from a line, the colour is clear.- 19 May 202624 ng/mLlowLab range 30–100
- 18 Nov 202531 ng/mLNormalLab range 30–100
- 3 Jun 202534 ng/mLNormalLab range 30–100
- 12 Nov 202426 ng/mLlowLab range 30–100
| Date | Value | Reference | Flag |
|---|---|---|---|
| 19 May 2026 | 24 ng/mL | 30–100 | low |
| 18 Nov 2025 | 31 ng/mL | 30–100 | Normal |
| 3 Jun 2025 | 34 ng/mL | 30–100 | Normal |
| 12 Nov 2024 | 26 ng/mL | 30–100 | low |