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Test Code LAB32 Phenytoin Free Level

Synonym

  • FPTN
  • Dilantin, Free

Specimen Required

Preferred Container/Tube: Red Top
Acceptable Container/Tube: Red Top
Specimen Volume: 2 mL
Specimen Minimum Volume: 1 mL

Specimen Collection Information

Draw as scheduled.

Specimen Stability Information

Refrigerated: 2 days
Frozen: 7 days

Rejected Due To

  • Quantity not sufficient

Reference Values

Therapeutic Range: 0.6-2.4 mcg/mL

Method Description

Chemiluminescent microparticle immunoassay

Test Classification

This immunoassay test was developed and its performance characteristics determined by the Toxicology Laboratory at The Ohio State University Wexner Medical Center. It has not been cleared or approved by the FDA. The laboratory is regulated under CLIA as qualified to perform high complexity testing. This test is used for clinical purposes and should not be regarded as investigational or for research. 

Performing Lab

Clinical Lab UH

Day(s) Performed

Monday through Sunday

Report Available

1 to 2 days

Reporting Name

Phenytoin, Free

CPT Code Information

80186

LOINC Code Information

3969-3