Phenytoin, Free

Overview

  • EPIC Code:
  • LAB32
  • Soft Test Code:
  • PHENF
Alternate Names
  • Dilantin, Free
  • Free Phenytoin
  • Phenytoin Level, Free

Specimen Collection & Preparation

Specimen Requirements:

-OR-

2.0 mL Serum from a Red Top Tube in a Plastic Vial
Minimum Volume:
1.0 mL Serum*

* This volume does not allow for repeat testing

Collection Instructions:

Should be drawn 2 - 4 hours after IV Dose, or just prior to next oral dose

Do not collect in a gel barrier tube


Rejection Criteria:

Gel Barrier Tube (SST or PST)

 


Transport and Storage:
  • Refrigerated: 7 Days

    Prior to ultrafiltration

Clinical Interpretation

Reference Range:

1 - 2 ug/mL


Critical Ranges:

 >/= 2.5 ug/mL


Methodology:
  • Ultrafiltration, Immunoassay

Production Schedule

Sites Performed
  • Parkview Regional Medical Center
Days Performed
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Departments
  • Chemistry
Turn Around Time

Same day/next day


Coding & Compliance

CDM

01420189


CPT Coding

80186