Phenobarbital

Tube Type

Test ID   LAB30
EPIC Order
  PHENOBARBITAL LEVEL
CPT Code(s)   80184
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   STAT: 888; Routine: 30
Specimen Routine: 2 mL blood/royal blue top tube or plain red top tube (no gel)
  micro: 300 µL blood/red top pediatric bullet; see Comments for important information
Stability
Unspun - 4 hrs
Spun and Separated Room Temp - 8 hrs
Spun and Separated Refrigerated - 2 days
Spun and Separated Frozen - 30 days
Availability 24 hrs/day
Turnaround Time   Routine: 2 hours; STAT: 1 hour
Reference Range Therapeutic: 15-40 µg/mL (trough)
  Toxic: >50 µg/mL
Comments Collection information: Red Top Pediatric Tubes must NOT contain Serum Separator Gel.
Trough samples are used for routine monitoring; collect sample immediately before next
dose.

Reviewed by jcayless on January 06, 2022

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514