PHENYTOIN / DILANTIN / EPTOIN
What does PHENYTOIN / DILANTIN / EPTOIN measure?
This test measures the level of phenytoin, also known by brand names such as Dilantin or Eptoin, in the blood. Phenytoin is a medicine commonly used to help control seizures. Testing may be used to monitor medicine levels, support dose adjustment decisions, check whether levels are within an expected therapeutic range, or investigate possible side effects or reduced treatment response. Results should be interpreted along with the timing of the dose and clinical context.
This overview is educational. Use the recorded preparation, sample and lab-partner details below for collection guidance, and confirm any missing information before collection.
Compare eligible lab partners
Prices, report times and availability are shown from the catalog records for each eligible partner.
- Sample for analysis
- Confirm with the collection team
- Report time
- To be confirmed
Preparation and specimen requirements can vary by test and laboratory. Follow the instructions shown for your selected partner and any advice from your healthcare professional.