Children's Mercy Hospitals and Clinics
Name
Phenytoin, Total

Synonyms
Dilantin

CMH Lab Section
Chemistry

Specimen Requirements
1 ml of blood in a red or green top tube, no gel

Availability
Stat, Urgent, Routine

Turn Around Time
Stat: 1 hrRoutine: 2-4 hrs

Special Instructions
Drawing instructions Trough: Levels are best if drawn immediately before next dose. Peak: Draw 1-2 hr post IV infusion

Methodology
Vitros

Ranges
Therapeutic: 10-20 mcg/mL
Toxic: >25 mcg/mL

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