Below the range
Common causes of a low Carbamazepine Level
- Autoinduction of metabolism
- Nonadherence
Looking for the other direction? See what causes a high Carbamazepine Level.
All tests · Therapeutic Drug Levels · Carbamazepine Level
Below the range
What causes a low Carbamazepine Level?
Normal range 4-12 µg/mL (17-51 µmol/L SI). Specimen: Serum (trough). See the full Carbamazepine Level reference page for critical values and nursing considerations.
What is the normal range for Carbamazepine Level?
The standard teaching reference range for Carbamazepine Level is 4-12 µg/mL in conventional units, or 17-51 µmol/L in SI units. This value is measured in serum (trough).
| Specimen | Serum (trough) |
|---|---|
| Conventional range | 4-12 µg/mL |
| SI range | 17-51 µmol/L |
| Critical value | > 12-15 µg/mL (ataxia, diplopia, drowsiness) |
| Panel | Therapeutic Drug Levels |
Full details, including nursing considerations, on the Carbamazepine Level normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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