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General Information:

Specimen Information:

Microbiology Information:

Antibiogram Information for Saint Francis:

Regional Laboratory Requisitions:

Web Links:

Mayo Clinic Laboratories

Test Code SOFT: PHENY Phenytoin, Total, Serum

Additional Codes

Ordering Mnemonic

EPIC NAME: PHENYTOIN LEVEL

EPIC CODE; LAB31

 

Performing Laboratory

Saint Francis Medical Center-Drug Monitoring

Specimen Requirements

Specimen Type: Serum

Container/Tube: Red top-Tubes with gel will be rejected

Specimen Volume: 0.5 mL

Collection Instructions: Draw blood 2 hours after intravenous dose or 15 minutes prior to next oral dose.

Stability: 4 days (R)

               

Specimen Transport Temperature

Refrigerated 24 hours

Reference Values

Therapeutic concentration: 10-20 µg/mL
Toxic concentration (automatic call-back): >20.5 µg/mL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

80185

Methodology

Enzyme Immunoassay (EIA)