Dilantin/Phenytoin

Dilantin/Phenytoin

Patient Preparation Collect as a trough just prior to next dose. For patients receiving phenytoin therapy, collect as a trough at least 2 hours after IV infusion or at least 4 hours after IM injection.

Preferred Specimen(s) 1 mL serum collected in a (red-top) tube (no gel)

Transport Container Plastic screw-cap vial

Transport Temperature

• Ambient 8 hrs,
• Refrigerated 2 days

Reject Criteria Serum separator tube (SST®)

Methodology Immunoassay

Clinical Significance Phenytoin is an anticonvulsant hydantoin used for the treatment of generalized tonic-clonic (grand-mal) and complex partial seizures. Phenytoin is also used for prophylaxis in neurosurgical procedures. Phenytoin levels are monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.

Book Your test Now