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Vitamin D, 25-Hydroxyng/mL

25-hydroxy vitamin D is the storage form of vitamin D and the standard way labs measure vitamin D status.

See your own Vitamin D, 25-Hydroxy on its range.

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What Vitamin D, 25-Hydroxy measures

25-hydroxy vitamin D is the storage form of vitamin D and the standard way labs measure vitamin D status.

If your Vitamin D, 25-Hydroxy is low

Vitamin D below the range is very common, especially with limited sun exposure, darker skin, higher body weight or winter months.

Commonly associated with

Worth asking your clinician: Whether supplementation and a repeat in a few months make sense.

If your Vitamin D, 25-Hydroxy is high

Vitamin D above the range is almost always from supplements; very high levels can affect calcium.

Commonly associated with

Worth asking your clinician: Whether the supplement amount and calcium level should be looked at.

Typical reference range

GroupTypical range
Adults30 – 100 ng/mL

Typical adult values used by many US labs. Your own report prints the range your lab validated for its method, and that range is the one that counts. Labwise always uses the printed range first.

If it is within range

Your vitamin D is within the range printed by your lab.

Also listed as

VITAMIN D, 25-OH, TOTAL, Vitamin D 25-OH Total, 25-Hydroxyvitamin D, Vitamin D, 25-OH, Vit D, 25-Hydroxy, Vitamin D (25-OH), VITAMIN D,25-OH,TOTAL,IA, Vitamin D, 25 Hydroxy

Related tests

This page is general information about what a laboratory test measures and what results outside a reference range are commonly associated with. It is not medical advice, does not diagnose any condition and does not replace your clinician. Discuss your results with your healthcare provider.