Lamotrigine unit converter
Convert lamotrigine between mcg/mL and µmol/L. Type in either box. The factors come from our catalog and are checked by code.
AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03
1 mcg/mL = 3.9049 µmol/L. Nothing you type here leaves your browser.
The conversion
- 1 mcg/mL = 3.905 µmol/LFrom mcg/mL to µmol/L: multiply by 3.905. Back again: divide by 3.905.
mcg/mL and mg/L give the same number.
Mass and molar units are linked by the molecular weight: 256.09 g/mol (lamotrigine, C9H7Cl2N5). Source: GlaxoSmithKline, via DailyMed (NIH National Library of Medicine).
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| mcg/mLsame as mg/L | µmol/L |
|---|---|
| 3 | 11.7 |
| 5 | 19.5 |
| 10 | 39 |
| 15 | 58.6 |
| 20 | 78.1 |
| 25 | 97.6 |
| 30 | 117.1 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the Lamotrigine page.
| Who | mcg/mL | µmol/L |
|---|---|---|
| Adults | 3–15 | 11.7–58.6 |