Why Your Lab Results Use Different Units (And What To Do About It)

If you’ve ever compared lab results from different providers, you’ve probably noticed something frustrating: the same test can show completely different numbers.

Your vitamin D might be 50 ng/mL at one lab and 125 nmol/L at another. Same blood, same test, different numbers.

Why This Happens

There’s no universal standard for lab result units. Different countries, labs, and even different tests within the same lab use different measurement systems.

Common culprits:

• Vitamin D: ng/mL (US) vs nmol/L (International)
• Glucose: mg/dL (US) vs mmol/L (International)
• Testosterone: ng/dL vs nmol/L
• Hemoglobin A1c: % vs mmol/mol

The Conversion Problem

Manually converting between units is tedious and error-prone. You need to know the conversion factor for each specific test, and one wrong decimal can throw everything off.

For example:

• Vitamin D: multiply ng/mL by 2.5 to get nmol/L
• Glucose: multiply mg/dL by 0.0555 to get mmol/L

That’s a lot to remember.

A Better Approach

This is exactly why we built LabsVault with automatic unit conversion. Upload your results and we standardize everything automatically.

No more mental math. No more confusion when comparing results across labs or countries.

Your data, one consistent format.