Popular conversions
1 pairsNanograms per Milliliter ↔ Nanomoles per Liter
ng/mL ↔ nmol/L
Unit guides
2 unitsDetailed guide to this category
Vitamin D laboratory reports commonly express 25-hydroxyvitamin D as nanograms per milliliter (ng/mL) or nanomoles per liter (nmol/L).
This tool converts the unit only. Test method, analyte and the laboratory's reference information remain important when reading a result.
- Measurement
- 25-hydroxyvitamin D concentration
- Common conventional unit
- ng/mL
- Common SI unit
- nmol/L
- Typical source
- Vitamin D laboratory reports
ng/mL and nmol/L
The two units express the same laboratory measurement using different concentration conventions. The converter applies the relationship defined for the 25-hydroxyvitamin D measurement in this tool.
Keep the analyte and unit shown by the laboratory together when comparing results from different reports.
Reading laboratory results
A converted number is not a diagnosis and should not be used by itself to change supplements or treatment. Laboratories can use different methods and reference information.
Discuss a result or a treatment decision with a qualified healthcare professional, especially when comparing reports from different laboratories.
Comparing reports with different units
When comparing results, retain the original unit, assay context and laboratory information. Converting the number does not change the test method or reference information that accompanied it.
Use the converter for unit expression only and discuss a result or any treatment decision with a qualified healthcare professional.
Unit comparison table
| Unit | Symbol | SI equivalent | System | Common use |
|---|---|---|---|---|
| Nanograms per Milliliter | ng/mL | Conventional reporting unit | Mass concentration | Vitamin D laboratory reports |
| Nanomoles per Liter | nmol/L | SI-style reporting unit | Amount-of-substance concentration | Vitamin D laboratory reports |
Units
| Unit | Symbol | Information |
|---|---|---|
| Nanomoles per Liter | nmol/L | View unit guide |
| Nanograms per Milliliter | ng/mL | View unit guide |
Sources
The definitions and conversion relationships on this page are aligned with standard metrology and SI reference material.