Description
Why It’s Done
This test is used to:
• Check therapeutic levels of carbamazepine in the blood
• Adjust dosage to ensure safety and effectiveness
• Prevent toxicity, which can cause symptoms like dizziness, confusion, blurred vision, or serious side effects
• Evaluate adherence to medication in patients with chronic conditions
• Investigate side effects or symptoms of overdose
Typical therapeutic range:
4 to 12 mcg/mL (may vary slightly by lab)
Preparation
• Timing: The test is usually done just before the next scheduled dose (trough level) to get the most accurate reading.
• Fasting: Not required.
• Medications: Inform your doctor of all medications and supplements, as drug interactions may affect carbamazepine levels.
• Follow instructions carefully regarding when to take your last dose before the test
