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Levetiracetam Level

Published: July 27, 2026Updated: August 25, 2026

This biomarker measures the concentration of levetiracetam, an anticonvulsant medication, in the blood to ensure it is within the therapeutic range.

Quick summary

Levetiracetam level monitoring ensures the drug is within the therapeutic range of 12–46 mg/L.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
mg/L
Clinical utility
monitoring
Result kind
quantitative
FDA-cleared
Roche Levetiracetam, Chromsystems Levetiracetam
interpretation: {"text":"Levels below 12 mg/L may indicate insufficient drug concentration for effective seizure control.","label":"Subtherapeutic"}; {"text":"Levels above 46 mg/L may increase the risk of adverse effects and require dose adjustment.","label":"Toxic"}

Levetiracetam is a medication primarily used in the management of epilepsy and other seizure disorders. Monitoring its level in the blood is crucial to ensure it is within the therapeutic range, which is typically between 12–46 mg/L.

Levels below the therapeutic range may result in inadequate seizure control, while levels above may increase the risk of adverse effects. Regular monitoring helps in adjusting the dosage as needed.

The measurement of levetiracetam levels is typically done through blood tests. It is important for patients to follow their healthcare provider's instructions regarding medication and testing schedules.

Frequently asked questions

Why is it important to monitor levetiracetam levels?
Monitoring ensures the drug is effective in controlling seizures while minimizing side effects.
What happens if my levels are too low or too high?
Low levels may lead to inadequate seizure control, while high levels can increase the risk of side effects. Your doctor may adjust your dose accordingly.
  1. 1
    Levetiracetam MonitoringSource
  2. 2
    Therapeutic Drug Monitoring of LevetiracetamSource

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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 25, 2026. · Read our editorial policy