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Phenytoin Test

Report Delivery Time: Next Day

Recommended Gender: Both

Sample Type: Blood

The Phenytoin Test measures the level of phenytoin (an anti-epileptic drug) in the blood to ensure it remains within the therapeutic range. This test is crucial for people taking phenytoin to prevent or control seizures, ensuring the medication is effective while avoiding toxicity. Regular monitoring helps adjust dosage and manage side effects. Keep your epilepsy treatment on track with accurate phenytoin level testing.

750.00

Whatsapp

+919354028488

Email Address

info@hprimelabs.com

Email Address

customercare@hprimelabs.com

750.00

Whatsapp

+919354028488

Email Address

info@hprimelabs.com

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The Phenytoin Test is a blood test that determines the concentration of phenytoin (also known as Dilantin) in the bloodstream. Phenytoin is commonly used to control and prevent seizures in individuals with epilepsy. Because this drug has a narrow therapeutic range, monitoring its level is essential to prevent both ineffective dosing and potential toxicity.

Why is the Phenytoin Test Done?

The test is typically ordered to:

  • Monitor phenytoin levels during routine epilepsy treatment

  • Adjust dosage based on individual metabolism and response

  • Investigate symptoms of phenytoin toxicity or underdosing

  • Ensure compliance with prescribed treatment

  • Evaluate therapeutic levels after a change in dosage or when other medications are introduced

Who Should Get This Test?

  • Individuals newly started on phenytoin therapy

  • Patients showing signs of side effects like confusion, dizziness, or unsteady movement

  • People with uncontrolled seizures despite treatment

  • Patients on long-term phenytoin therapy requiring routine monitoring

Test Procedure & Preparation

  • A simple blood sample is taken, typically just before the next dose (trough level).

  • No fasting is usually required unless instructed.

  • Inform your doctor about any other medications being taken, as they may affect phenytoin levels.

Understanding the Results

  • Therapeutic range: Usually 10–20 mcg/mL.

  • Low levels may mean inadequate seizure control or non-compliance.

  • High levels can lead to toxicity with symptoms like nystagmus, slurred speech, or even coma.

  • Dosage adjustments should be done under medical supervision based on the test results.

Check for other Health Checkup Packages to monitor your health.

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