Drugs & toxicology

Rifampicin (post-dose) unit converter

Rifampicin level in serum or plasma (drug monitoring; tuberkulose)

Converter

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

µg/mL µmol/L mg/dL µg/dL

Worked example

16 µg/mL (middle of the reference range) = 19.4 µmol/L

Conversion formulas

µmol/L	µmol/L = µg/mL × 1.215	µg/mL = µmol/L × 0.8229
mg/dL	mg/dL = µg/mL × 0.1	µg/mL = mg/dL × 10
µg/dL	µg/dL = µg/mL × 100	µg/mL = µg/dL × 0.01

Good to know

Rifampicin (post-dose) is reported in µg/mL or µmol/L. The page converts between the units only.

µmol/L × 0.8229 = µg/mL (exact factor 0.8229).
The range shown is a guide from the named source; targets and reference ranges differ between laboratories, methods and indications, so compare with the range on your own report.

Reference range

Unit	Adults
µg/mL	8 – 24
µmol/L	9.722 – 29.17
mg/dL	0.8 – 2.4
µg/dL	800 – 2400

Source: Severn Pathology (North Bristol NHS Trust): Rifampicin · Last reviewed: 2026-10-19

Note from the source: Post-dose: below 4 mg/L subtherapeutic, 4-8 mg/L usually adequate, 8-24 mg/L ideal (Severn Pathology).

Frequently asked questions

How do I convert Rifampicin (post-dose) from µg/mL to mg/dL?

mg/dL = µg/mL × 0.1. In the other direction: µg/mL = mg/dL × 10.

What is the reference range of Rifampicin (post-dose)?

For adults the range is 8 – 24 µg/mL (Severn Pathology (North Bristol NHS Trust): Rifampicin). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Rifampicin (post-dose)?

Common units are µg/mL, µmol/L, mg/dL, µg/dL.