Gamma-Hydroxybutyric Acid Screen, Urine

Overview

  • EPIC Code:
  • LAB2639
  • Soft Test Code:
  • Send Out Test Code:
  • 37653 (9326U)
Alternate Names
  • Date Rape Drug
  • Gamma-Hydroxybutyrate
  • Gamma-Hydroxybutyrate Acid
  • GHA
  • GHB
  • Sodium Oxybate
  • Xyrem
Clinical Significance

Forensic Analysis; Exclusion Screen


Specimen Collection & Preparation

Specimen Requirements:

-OR-

5.0 mL Urine Collection in a Non-Sterile Yellow Capped Container
Minimum Volume:
2.8 mL Urine*

* This volume does not allow for repeat testing

Specimen Information:

 Preservative-free


Transport and Storage:
  • Ambient (18-24°C): 7 Days
  • Refrigerated (2-8°C): 7 Days

    Transport 

  • Frozen (-20° C or colder): 21 Days

Clinical Interpretation

Reference Range:

Refer to interpretive report


Test Comments:

If the screen is positive, confirmatory testing will be added automatically at no additional charge:

• If the GHB screen needs confirmation it will reflex to Gamma-Hydroxybutyric Acid Confirmation, Urine.
• If the Creatinine value is Less than or equal to 300 mg/L or equal to or greater than 3000 mg/L, then Specific Gravity Confirmation, Urine will reflex.


Methodology:
  • Gas Chromatography / Mass Spectrometry (GC/MS)
Clinical Significance

Forensic Analysis; Exclusion Screen


Production Schedule

Sites Performed
  • Quest - Chantilly to NMS Laboratories
Days Performed
Tuesday
Thursday
Departments
  • Sendouts - Clinical
Turn Around Time

5 days; 9 days if positive


Coding & Compliance

CDM

00918040


CPT Coding

80307, Reflex Confirmatory testing