Phenobarbital

Overview

  • EPIC Code:
  • LAB30
  • Soft Test Code:
  • PHENB
Alternate Names
  • Luminal
  • PHENB
  • Phenobarbital Level

Specimen Collection & Preparation

Specimen Requirements:

-OR-

1.0 mL Serum from a Red Top Tube in a Plastic Vial
Minimum Volume:
0.25 mL Serum*
Neonatal Volume:
0.3 mL Whole Blood Microtainer*

* This volume does not allow for repeat testing

Collection Instructions:

Do not collect in a gel barrier tube (PST or SST)

Green microtainer is preferred for capillary collection


Rejection Criteria:

Gel Barrier Tube (PST or SST)


Transport and Storage:
  • Ambient (18-24°C): 7 Days
  • Refrigerated (2-8°C): 7 Days
  • Frozen (-20° C or colder): 12 Months

Clinical Interpretation

Reference Range:

15 - 40 ug/mL


Critical Ranges:

NICU (Infants in a Parkview Health Neonatal Intensive Care Unit): 
> 40 ug/mL

Pediatric to Adult:
> 60 ug/mL


Methodology:
  • Fluorescence Polarization Immunoassay (FPIA)

Production Schedule

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

Same Day/1 to 2 days


Coding & Compliance

CPT Coding

80184