Gamma-Hydroxybutyric Acid (GHB), Screen with Confirmation, urine
Synonyms
GHB; γ-hydroxybutyrate
Expected Turnaround Time
5 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
In-house validated method
Specimen Requirements
Specimen
Urine (random)
Volume
10 mL
Minimum Volume
2 mL
Container
Plastic urine container or transport tube without preservative
Storage Instructions
Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
Test Details
Use
Detect use of gamma-hydroxybutyric acid (GHB), a psychoactive drug
Methodology
Initial presumptive testing by chromatography/tandem mass spectrometry (LC/MS-MS) at a testing threshold of 10.0 µg/mL; presumptive positives confirmed by definitive chromatography/mass spectrometry (GC/MS) at a testing threshold of 10.0 µg/mL
Reference Interval
NEGATIVE