Carbamazepine (Tegretol) Level Test
Keep your carbamazepine dose precise and safe.
The Carbamazepine (Tegretol) Level Test measures the concentration of carbamazepine in your bloodstream to help ensure your medication is working effectively and safely. Carbamazepine is commonly prescribed to manage epilepsy and trigeminal neuralgia, and regular monitoring is essential because the therapeutic window is narrow: too little can leave symptoms uncontrolled, while too much can cause toxicity.
This test is suitable for anyone taking carbamazepine who needs routine therapeutic drug monitoring, particularly after starting treatment, adjusting the dose, or adding other medications that may interact. It is also useful if you experience side effects such as dizziness, drowsiness, blurred vision, or unsteadiness, which can indicate that levels are too high.
Biomarkers
Therapeutic Drug Monitoring
- Carbamazepine (Tegretol) level
Why it matters
Carbamazepine levels can vary widely between individuals due to differences in metabolism, age, liver function, and interactions with other drugs. Regular monitoring helps your doctor fine-tune your dose, maximise seizure control or pain relief, and minimise the risk of adverse effects. It is a simple blood test that provides clear, actionable information for your ongoing care.
Therapeutic Drug Monitoring
- Carbamazepine (Tegretol) level
No special preparation required.
For blood tests, we recommend drinking plenty of water beforehand to ensure smooth sample collection. If you are taking any regular medication, continue to do so unless advised otherwise by your doctor.
Important Clinical Information:
This test is a screening tool to monitor and support your overall health. It does not replace your GP or Consultant.
Always discuss your test results, especially any abnormal results, with your GP, who can interpret them in the context of your medical history and overall health.
Service Booking
Includes £15 phlebotomy fee
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