Carbamazepinedose
Key facts at a glance
- LOINC
- 4152-5
- Short code
- CARB
- Synonyms
- carBAMazepine Dose
- Category
- chemistry
- Sample
- serum
- Container
- Red-top serum tube (no anticoagulant) or serum separator tube (SST)
- Units
- N/A
- Ref low
- 4
- Ref high
- 12
- Critical range
- — – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–99 years
- Method
- Immunoassay (e.g., PETINIA, EMIT) or Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
- CPT
- 80156
- SNOMED
- 387458008
- Specimen volume
- 1-2 mL of serum
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C or below): 30 days
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 4–24 hours
- Order
- routine
Reference range
Therapeutic reference range for carbamazepine is typically 4-12 mcg/mL when measured as a trough level. This LOINC code (4152-5) represents the mass-based dose-adjusted reporting used for therapeutic drug monitoring and dose normalization.N/A
No fasting required. Specimen should be collected as a trough level, immediately prior to the next scheduled dose, typically after steady-state has been reached (approximately 1-2 weeks after initiation or dose change). Patients should be instructed to take their medication as prescribed.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 15, 2026. · Read our editorial policy