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Test Code LAB11290 Phenytoin, Free

Department

SEND OUTS

Reference Lab Test Number

PHNYF

Refer To

Warde Lab

Primary Collection Container

Red (No Gel)

Transport

Serum refrigerated

Preferred Transport Temperature

Refrigerated

Processing

Centrifuge, separate and send 3 mL serum in a screw-capped plastic vial.

Stability

Ambient: Unacceptable

Refrigerated: 30 days

Frozen: 3 months

Minimum Testing Volume

0.5 mL

Reference Range

Therapeutic: 0.8-2.0 µg/mL

Toxic: >3.0 µg/mL

Methodology

Homogeneous Enzyme Immunoassay

Performed

Sunday – Friday

Reported

2 Days

CPT Codes

-80186

Unacceptable Conditions

SST

Alternate Collection Container

Lavender 6 mL (K3EDTA)

Green (Lithium Heparin)

Green (Sodium Heparin)