Above the range
Common causes of a high Vitamin D, 25-Hydroxy
- Excess supplementation (toxicity)
- Rarely, granulomatous disease
Looking for the other direction? See what causes a low Vitamin D, 25-Hydroxy.
All tests · Inflammatory & Other Chemistry · Vitamin D, 25-Hydroxy
Above the range
What causes a high Vitamin D, 25-Hydroxy?
Normal range 30-100 sufficient (< 20 deficient) ng/mL (75-250 nmol/L SI). Specimen: Serum. See the full Vitamin D, 25-Hydroxy reference page for critical values and nursing considerations.
What is the normal range for Vitamin D, 25-Hydroxy?
The standard teaching reference range for Vitamin D, 25-Hydroxy is 30-100 sufficient (< 20 deficient) ng/mL in conventional units, or 75-250 nmol/L in SI units. This value is measured in serum.
| Specimen | Serum |
|---|---|
| Conventional range | 30-100 sufficient (< 20 deficient) ng/mL |
| SI range | 75-250 nmol/L |
| Panel | Inflammatory & Other Chemistry |
Full details, including nursing considerations, on the Vitamin D, 25-Hydroxy normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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