Vitamin D Report: Normal Range & How to Read It
A vitamin D test measures 25-hydroxy vitamin D, the form your body stores. Your report prints it in ng/mL, often with bands such as deficient and sufficient.
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What vitamin D does
Bones
Vitamin D helps your body absorb calcium.
Sunlight
Your skin makes vitamin D in sunlight.
Bands
Reports often print deficient, insufficient and sufficient.
Vitamin D normal range
Labs differ a little. Always compare with the range printed on your report.
| Test | Range | Unit | What it tells you |
|---|---|---|---|
| Vitamin D (25-OH) | |||
| Sufficient | 30–100 | ng/mL | The range our biomarker library uses. |
| Insufficient | 20–29 | ng/mL | A little lower than the usual range. |
| Deficient | Below 20 | ng/mL | Your doctor decides if you need supplements. |
| Often tested with it | |||
| ALP | 44–147 | U/L | An enzyme from bone and liver. |
| Vitamin B12 | 200–900 | pg/mL | Another vitamin often checked at the same time. |
Ranges from the NirogGyan biomarker library. Updated .
What a vitamin D report looks like
The same results in the usual lab layout, and as a NirogGyan Smart Report.
Numbers and ranges in rows
Each value on our report slider
How to read your vitamin D report
Check the unit
Vitamin D is printed in ng/mL or nmol/L. Multiply ng/mL by 2.5 to get nmol/L.
Find your result
The Result column shows your vitamin D value.
Compare with the bands
Find which band your value falls in.
Look for H or L
A flag marks a value outside the range. Your doctor reads what it means.
Vitamin D report questions
What is a normal vitamin D level?
Our biomarker library uses 30 to 100 ng/mL for 25-OH vitamin D. Your report may print its own bands.
What do deficient and insufficient mean?
Many reports call levels below 20 ng/mL deficient and 20 to 29 ng/mL insufficient. Check the bands printed on your report.
What is the difference between ng/mL and nmol/L?
They are two units for the same test. To change ng/mL to nmol/L, multiply by 2.5.
Do I need to fast for a vitamin D test?
Usually no. Follow your lab's instructions if other tests are booked with it.
Why is low vitamin D common in India?
Indoor work, covered clothing and pollution can reduce sun exposure on the skin, which is the main source of vitamin D.
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Upload your reportThis page explains how to read a lab report. It does not replace advice from your doctor. All sample values are made up.