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Also known as: Epanutin
Formal name: Phenytoin

At a Glance

Why Get Tested?

To determine phenytoin concentration in the blood, to maintain an appropriate level, and to detect phenytoin toxicity

When to Get Tested?

At regular intervals to monitor, as needed to detect low or toxic concentrations

Sample Required?

A blood sample taken from a vein in your arm

Test Preparation Needed?