Phenytoin

Laboratory:Chemistry

Test ID/Workstation: PHENY MACH1

Specimen Type: Blood

Tube Type: Red top (no anticoagulant) or Green top (lithium heparin) tube

Collection Volume: 0.4 mL (minimum 0.2 mL)

Storage: Frozen

Availability: Daily, 24 hours; STAT

Methodology: Fluorescence Polarization

Special Instructions: For therapeutic monitoring, draw peak levels 2-4 hours post-IV infusion (loading dose) or 3-9 hours post-oral ingestion and trough levels immediately prior to next dose. Please indicate whether the specimen is a peak, trough, or random specimen.

OC Power Word: LVDILANTIN; LVPHENY

Lab/Phone: 330-746-9623

TAT: 1 hour

Additional Info: Therapeutic range: 10.0-20.2 ug/mL

CPT Code: 80185

Synonyms: Dilantin; Diphenylhydrantoin

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