what does phenytoin check for
Phenytoin is a drug that is used to treat some seizure disorders (see Epilepsy), including complex partial seizures (psychomotor seizures) and seizures that occurr during or after neurosurgery. Phenytoin may be used alone or with phenobarbital or other anticonvulsants. This test measures the amount of phenytoin in the blood. Seizure disorders affect the brain's ability to transmit electrical impulses and to regulate nerve activity.