25-Hydroxyvitamin D
Other marker
Vitamin D
25-Hydroxyvitamin D
Category: Other
Unit: nmol/L
Essential vitamin for bone health, immune function, and hormone production.
PED Notes
Many athletes are deficient despite supplement use. Important for testosterone production, immune function, bone health, and mood. Aim for 75-150 nmol/L for optimal performance and hormonal health.
When low
Supplements:
- Vitamin D3 -- 5000 IU/day (take with a fat-containing meal for absorption)
- Vitamin K2 (MK-7) -- 100-200mcg/day (directs calcium to bones, not arteries)
Follow-up:
- Recheck levels after 8-12 weeks of supplementation
Educational information, not medical advice. Nothing here is a prescription or a treatment plan, and it does not account for your history, medications or conditions. Use it to ask better questions: bring it to your doctor and decide together. Full disclaimer.
History Chart
Reading History
Frequently Asked Questions
Reference Ranges
Standard Range
50 - 250 nmol/L
VitalMetrics Range
75 - 150 nmol/L