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Test Code NPHENR Phenytoin (Dilantin), Free and Total

Important Note

Free phenytoin requires red top tube. Serum gel tube NOT acceptable

Additional Codes

This panel includes both free and total phenytoin

 

Tests are also orderable separately

Specimen

Draw blood in plain red top tube. 2.0 ml serum required.

 

 

Note:  Label specimen with patient’s name (first and last), date of birth, date and time of draw, and phlebotomist’s initials.

Performing Location

NORDX

CPT Code

80186  Phenytoin, free

80185  Phenytoin, total

Collection Container

Plain red top tube

Specimen Transport Temperature

Refrigerated

Day(s) Test Set Up

Monday through Sunday

Volume

2.0 ml

Units of Measure

ug/mL

LOINC

3969-3

Methodology

Immunoassay