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Epic Code LAB30 Phenobarbital, Blood Level

Test Name Alias

Phenobarbital Blood Level | Barbita | Solfoton | Luminal | 8232

Interface Order Alias

10217

Collection Instructions

Specimen Collection: Blood

 

Container(s): 4.5 mL Mint Green Top (Lithium Heparin Gel) or 5.0 mL Gold Top (Serum Separator-SST Gel)*

Preferred Volume to Collect: 4.5 mL

Minimum Volume to Collect: 1.0 mL

Neonate Volume to Collect: 0.5 mL

Capillary collect ok? Yes

Microtainer acceptable: Yes

 

Collection Instructions:

  • Inpatients: Please contact your local inpatient pharmacy for information regarding appropriate timing for blood drug level orders, if needed.
  • Indicated date and time of last dose.

  • Specimen usually collected as trough level.

  • Avoid gross hemolysis

  • After collection, gently invert tube 8-10 times.
  • Specimen should be processed within 2 hours – See Processing Instructions.

*Red top (plain) or Green top (Lithium Heparin, Non-Gel) are also acceptable specimen containers.

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Plasma or Serum

Centrifuge/Spin: Yes

Aliquot: Yes

 

Processing Instructions:

  • Plasma is preferred specimen type
  • Green Tube/Plasma: Centrifuge after collection.
  • Gold Tube/Serum: Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.

Transport Temperature: Refrigerate

Specimen Stability

Ambient: 8 hours

Refrigerate: 24 hours (48 hours if aliquoted serum/plasma)

Frozen: aliquot plasma/serum for longer storage

Laboratory Retention: 72 hours

Test Frequency

Available 24 hours, usual TAT 1 day.

Reference Range

Phenobarbital, Blood Level

     15.0 – 40.0 mcg/mL

 

Laboratory Critical Values Table

Performing Department

Chemistry

Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI
Corewell Health Lakeland St. Joseph Laboratory, St. Joseph, MI

Methodology

Kinetic Interaction of Micro particles in a Solution (KIMS)

CPT

80184

CDM Code

3018018401

Epic Test ID

1230101036

LOINC

Phenobarbital Lvl: 3948-7

Mayo Access Code

SHO8232

Reviewed Date

3/7/2024

Updated Date

3/15/2024 - Reference Range