ARUP's Laboratory Test Directory

Mephenytoin & Metabolite, Serum or Plasma : 0091110

Mnemonic: MEPHEN SP

Methodology: High Performance Liquid Chromatography
Performed: Varies
Reported: 3-9 days
Specimen Required: Collect: One 7 mL plain red, gray (sodium fluoride/potassium oxalate), green (sodium heparin), lavender (EDTA), or pink (K2EDTA).

Storage/Transport Temperature: 2 mL serum or plasma at 2-8°C. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube.

Remarks: Remove serum or plasma from cells ASAP.

Unacceptable Conditions: Separator tubes.

Stability (collection to initiation of testing): Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 13 months

Reference Interval:
By report
CPT Code(s): 80299
Cross References: Mesantoin® (Mephenytoin & Metabolite, Serum or Plasma) , Nivarnol® (Mephenytoin & Metabolite, Serum or Plasma)