Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

GAMMA HYDROXYBUTYRIC ACID, URINE

General Information

Lab Order Codes:

GHBA

Synonyms:

GHB

CPT Codes:

82491 – Chromatography, quantitative,column.
82542 (if positive) – Column chromatography/mass spectrometry quantitative,

Test Includes:

Gamma-Hydroxybutyric Acid level measured in ug/mL.

Logistics

Test Indications:

Measurement of this sedative/hypnotic in urine.

Lab Testing Sections:

Chemistry - Sendouts

Referred to:

MedTox Laboratories (MedTox Test:1365)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

5 days

Special Instructions:

N/A

Specimen

Specimen Type:

Aliquot of random or spot urine collection

Container:

Screw-capped urine container without preservative

Draw Volume:

10 mL urine

Processed Volume:

Same as Draw Volume

Collection:

Random or spot urine collection

Special Processing:

Lab Staff: Aliquot urine into a screw-capped plastic vial without preservative. Store and ship at refrigerated temperatures. Ambient or frozen temperature is acceptable. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled specimens, unlabeled specimens

Interpretive

Reference Range:

Negative

Positives will be confirmed and reported in ug/mL.

Critical Values:

N/A

Limitations:

Reporting limit: 5 ug/mL

Methodology:

Gas chromatography/Mass spectrometry (GC/MS). Gas Chromatography/Flame Ionization Detection (GC-FID).

References:

MedTox Laboratories Web Page March 2009



  Lab Test Directory
    Chemistry
    Coagulation
    Flow/Immunology
    Hematology
    Microbiology/ Virology
    Other Fluids
    Pathology
    Serology
    Transfusion Services
    Urine/Stool

  Search Lab Test Directory
    List All Documents

  Lab Staff

  E-mail Lab Services