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Labcorp Oklahoma, Inc.
Test Directory


Index:

Gamma-Hydroxybutyric Acid (GHB)

Order Name GHB Serum
Test Number: 3604705
Revision Date 10/01/2023
Test Name Methodology LOINC Code
Gamma-Hydroxybutyric Acid (GHB)
Liquid Chromatography/Tandem Mass Spectrometry 59681-7 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 5 mL (1.2 mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Alternate 1 5 mL (1.2 mL) Plasma Lithium Heparin (Dark Green Top / No-Gel) Refrigerated
Instructions Specimen Type: Red-top tube or green-top (heparin) tube
Specimen Storage: SUBMISSION/TRANSPORT (<3 days): Room Temperature. For storage beyond three days, specimen should be refrigerated or frozen.
Specimen Collection: Serum or plasma should be separated from cells within two hours of venipuncture. Send serum or plasma in a plastic transport tube. Gel-barrier tubes are NOT recommended.
Special Instructions: Testing referred to MedTox Laboratories Inc TC 19250
 
GENERAL INFORMATION
Expected TAT 7 - 10 days 
CPT Code(s) 80307
Internal Comments 12/5/16 - Added to RML Online - JLS
9/25/17 moved to ARUP - JK
11/6/17 updates spec and su - JK
11/15/18 - Updated CPT (SN)
4/24/21 update TAT - JK

12/12/22 
If positive, reflex confirmation will be added.
Reflex Order Code: (5613651.GHB Confirmation | Reflex Result Code: (5613651.GHB Conf
80307 (Reflex 80375)
Lab Section Reference Lab