Drugs & toxicology

Tacrolimus unit converter

Immunosuppressant drug level (trough, transplant patients)

Also known as: FK506, Fujimycin, Prograf, Advagraf, Envarsus

Converter

Enter a value in any unit and all other units fill in.

ng/mL nmol/L µg/dL ng/dL ng/L

Worked example

10 ng/mL (middle of the reference range) = 12.4 nmol/L

Conversion formulas

nmol/L	nmol/L = ng/mL × 1.244	ng/mL = nmol/L × 0.804
µg/dL	µg/dL = ng/mL × 0.1	ng/mL = µg/dL × 10
ng/dL	ng/dL = ng/mL × 100	ng/mL = ng/dL × 0.01
ng/L	ng/L = ng/mL × 1000	ng/mL = ng/L × 0.001

Reference range

Unit	Adults
ng/mL	5 – 15
nmol/L	6.219 – 18.66
µg/dL	0.5 – 1.5
ng/dL	500 – 1500
ng/L	5000 – 15 000

Source: UW Medicine Laboratory Test Guide, Tacrolimus by LC-MS/MS · Last reviewed: 2026-10-14

Frequently asked questions

How do I convert Tacrolimus from ng/mL to nmol/L?

nmol/L = ng/mL × 1.244. In the other direction: ng/mL = nmol/L × 0.804.

What is the reference range of Tacrolimus?

For adults the range is 5 – 15 ng/mL (UW Medicine Laboratory Test Guide, Tacrolimus by LC-MS/MS). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Tacrolimus?

Common units are ng/mL, nmol/L, µg/dL, ng/dL, ng/L.