Drugs & toxicology

Olanzapine unit converter

Atypical antipsychotic drug level for therapeutic drug monitoring

Also known as: Zyprexa

Converter

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

ng/mL nmol/L µmol/L µg/dL ng/dL

Worked example

50 ng/mL (middle of the reference range) = 160 nmol/L

Conversion formulas

nmol/L	nmol/L = ng/mL × 3.201	ng/mL = nmol/L × 0.3124
µmol/L	µmol/L = ng/mL × 0.003201	ng/mL = µmol/L × 312.4
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

Reference range

Unit	Adults
ng/mL	20 – 80
nmol/L	64.01 – 256.1
µmol/L	0.064 – 0.2561
µg/dL	2 – 8
ng/dL	2000 – 8000

Source: Therapeutic Drug Monitoring in Psychiatry (Pharmaceuticals 2024), AGNP reference ranges · Last reviewed: 2026-10-14

Note from the source: AGNP consensus reference range 20-80 ng/mL (trough)

Frequently asked questions

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

nmol/L = ng/mL × 3.201. In the other direction: ng/mL = nmol/L × 0.3124.

What is the reference range of Olanzapine?

For adults the range is 20 – 80 ng/mL (Therapeutic Drug Monitoring in Psychiatry (Pharmaceuticals 2024), AGNP reference ranges). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Olanzapine?

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