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Gamma-Hydroxybutyric Acid Screen, Urine
Last Modified:
3/4/2021 12:47:22 PM
Medical Necessity Documentation:
Client Notes:
Patient Preparation:
Specimen Requirements:
5.0 mL
Urine
Collection in a
Non-Sterile Yellow Capped Container
Collection Instructions:
preservative-free
Minimum Volume:
2.8 mL Urine
Transport & Storage: Temperature/Stability:
7 days Ambient
7 days Refrigerated
21 days Frozen
Reference Range:
Gamma-Hydroxybutyric Acid 2.0 mcg/mL
GHB; Gamma-Hydroxybutyrate
Endogenous GHB levels in healthy adults have been determined to range up to 6.6 mcg/mL. Sixteen healthy adults given a single oral dose (50 mg/kg) developed urine levels averaging: 168 mcg/mL during the 0 to 3 hour post-dose interval, 157 mcg/mL during the 3 to 6 hour period and 3.8 mcg/mL for the 6 to 12 hour window. The value reported for GHB is a total of GHB and its lactone (GBL) in the specimen
Critical Ranges:
Test Comments:
If screen is positive, confirmatory testing will be added automatically at no additional charge.
Methodology:
GC/MS
Clinical Significance:
Forensic Analysis; Exclusion Screen
Documentation:
Custom Panel:
No
PRODUCTION SCHEDULE
Turn Around Time:
4 days
Days Performed:
Tuesday, Thursday
Sites Performed:
Quest - Chantilly to NMS Laboratories
PHL Test Code:
GHA
EPIC Test Code:
LAB3064
Send Out Test Code:
37653 (9326U)
Alternate Test Names:
Date Rape Drug; Gamma-Hydroxybutyrate; Gamma-Hydroxybutyrate Acid; GHB ; Sodium Oxybate; Xyrem
Included Tests:
CPT Coding:
80307
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