Vitamin D: what it is, values and what high or low means
25-hydroxyvitamin D, the form your liver makes and keeps in circulation. It is the standard way to read vitamin D status. Vitamin D helps you absorb calcium and keep bone strong, and plays a part in muscle and immune function. Low values are common after winter and with little time outdoors.
Values
Ranges vary by method. No optimal band is shown — none narrower than the lab’s is widely agreed.
| Type | Value | Units | Laboratory | Sex | Age |
|---|---|---|---|---|---|
| Value awaiting review | 30–100 | ng/mL | Not specified | Not specified | adults |
These values come from content awaiting review. The laboratory is unspecified and their classification as intervals, thresholds or targets has not been verified. Discuss the interval on your report with your doctor.
High and low
Low values are common after winter and with little time outdoors. consult your doctor
What affects the result
- Sun on skin, season, latitude, skin tone, body weight, diet and supplements. It changes slowly, over weeks to months.
How we measure it
Not currently available in our profiles
Included in
Bone Health
Calcium, Phosphorus, Vitamin D (25-OH) See all
Confirm the preparation before your visit.
€225
Not included: Includes total alkaline phosphatase, not the bone isoenzyme. Does not include a bone density scan.
Basic Female Hormone Profile
Estradiol, Progesterone, FSH See all
Confirm the preparation before your visit.
€255
Not included: Does not include AMH, SHBG, DHEA-S, cortisol, insulin or β-hCG. It does not cover ovarian reserve or a fertility assessment.
Basic Male Hormone Profile
Total testosterone, FSH, LH See all
Confirm the preparation before your visit.
€245
Not included: Does not include free testosterone, SHBG, DHEA-S, cortisol or IGF-1.