Drugs & toxicology

Flecainide unit converter

Antiarrhythmic drug level for therapeutic drug monitoring

Also known as: Tambocor

Converter

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

µg/mL µmol/L µg/dL µg/L nmol/L

Worked example

0.6 µg/mL (middle of the reference range) = 1.45 µmol/L

Conversion formulas

µmol/L	µmol/L = µg/mL × 2.413	µg/mL = µmol/L × 0.4143
µg/dL	µg/dL = µg/mL × 100	µg/mL = µg/dL × 0.01
µg/L	µg/L = µg/mL × 1000	µg/mL = µg/L × 0.001
nmol/L	nmol/L = µg/mL × 2413	µg/mL = nmol/L × 0.0004143

Reference range

Unit	Adults
µg/mL	0.2 – 1
µmol/L	0.4827 – 2.413
µg/dL	20 – 100
µg/L	200 – 1000
nmol/L	482.7 – 2413

Source: FDA drug label (DailyMed): flecainide · Last reviewed: 2026-10-14

Note from the source: Trough plasma levels 0.2-1 mcg/mL; above 0.7-1 mcg/mL more adverse events (FDA label)

Frequently asked questions

How do I convert Flecainide from µg/mL to µmol/L?

µmol/L = µg/mL × 2.413. In the other direction: µg/mL = µmol/L × 0.4143.

What is the reference range of Flecainide?

For adults the range is 0.2 – 1 µg/mL (FDA drug label (DailyMed): flecainide). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Flecainide?

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