Lamotrigine Test
Also known as: Lamotrigine Level Test, Lamotrigine Blood Test, Lamotrigine Serum Test
Lamotrigine Test test available at DNA Labs India for ₹10,000. Uses LC-MS/MS on Serum samples. Results in 2-3 weeks. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Ramarao Paidisetty
Consultant Biochemist · Reg: 21504
Last reviewed: September 7, 2026
Overview
The purpose of the lamotrigine test is to monitor the concentration of lamotrigine in the blood to ensure it is within the therapeutic range. This helps in assessing drug efficacy, adjusting dosages, preventing toxicity or subtherapeutic levels, and managing symptoms of epilepsy and bipolar disorder effectively.
- Test Code
- 1152
- Price
- ₹10,000
- Sample Type
- Serum
- Result Time
- 2-3 weeks
- Fasting Required
- No
- Method
- LC-MS/MS
Sample Collection
Collect sample 0.5 to 1 hour before the next dose at steady state. Ensure the patient is on a stable dose for accurate monitoring. Duly filled Test Send Out Consent Form (Form 35) is mandatory.
Method: Venipuncture
Laboratory Analysis
Standard venipuncture procedure to collect 2 mL blood in a Red Top (No Additive) tube.
Report Delivery
Apply pressure to the puncture site to stop bleeding. Store sample as per stability guidelines.
Timeline: 2-3 weeks
Patient Instructions
About This Test
Who Should Get This Test
The purpose of the lamotrigine test is to monitor the concentration of lamotrigine in the blood to ensure it is within the therapeutic range. This helps in assessing drug efficacy, adjusting dosages, preventing toxicity or subtherapeutic levels, and managing symptoms of epilepsy and bipolar disorder effectively.
How to Prepare
- Collect sample 0.5 to 1 hour before next dose at steady state
- Use 2 mL serum from 1 Red Top (No Additive) tube; do not use SST gel barrier tubes
- Ship refrigerated or frozen
- Duly filled Test Send Out Consent Form (Form 35) is mandatory
Doctor's Notes
Reviewed by Dr Ramarao Paidisetty — MBBS, MD (Biochemistry) · Reg. No. 21504
"Monitoring lamotrigine levels is crucial to ensure therapeutic efficacy and minimize side effects in patients with epilepsy and bipolar disorder."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed or lipemic samples
- Improper sample container or handling
- Missing consent form
- Samples collected at incorrect time relative to dose
Understanding Your Results
May indicate subtherapeutic levels, risking inefficacy; dosage adjustment may be needed.
Level: Below therapeutic range
Optimal levels for efficacy and safety; continue current regimen with monitoring.
Level: Within therapeutic range
Risk of toxicity and side effects; dosage reduction or further evaluation required.
Level: Above therapeutic range
Consult a doctor if lamotrigine levels are outside the therapeutic range, or if symptoms of toxicity (e.g., dizziness, nausea) or inefficacy (e.g., increased seizures) occur.
Limitations
- ⚠Results should be interpreted in clinical context
- ⚠Does not replace clinical assessment of symptoms
- ⚠May vary based on individual patient factors
Risks & Considerations
- ●Minor pain or bruising at puncture site
- ●Rare infection or bleeding
- ●No significant risks associated with the test
Interfering Factors
- ●Other medications that may affect lamotrigine levels
- ●Renal or hepatic impairment
- ●Timing of sample collection relative to dose
- ●Sample handling and storage conditions
Frequently Asked Questions
What is a lamotrigine test?
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