Order Code ETGC Ethyl Glucuronide Confirmation, Random, Urine
Ordering Guidance
For situations where chain of custody is required, a Chain of Custody Kit (T282) is available. For chain-of-custody testing, order ETGX / Ethyl Glucuronide Confirmation, Chain of Custody, Random, Urine.
Additional drug panels and specific requests are available: call 800-533-1710.
Additional Testing Requirements
If urine creatinine is required or adulteration of the specimen is suspected, the following test should also be ordered, ADULT / Adulterants Survey, Random, Urine.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Plastic urine container
Submission Container/Tube: Plastic, 5-mL tube
Specimen Volume: 1 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Additional Information:
1. No specimen substitutions.
2. STAT requests are not accepted for this test.
3. Submitting less than 1 mL will compromise our ability to perform all necessary testing.
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.
Useful For
Monitoring abstinence in clinical and justice system settings
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Reporting Name
Ethyl Glucuronide Confirmation, USpecimen Type
UrineSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
Specimen Type | Temperature | Time |
---|---|---|
Urine | Refrigerated (preferred) | 28 days |
Ambient | 28 days | |
Frozen | 28 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
Negative
Cutoff concentrations by liquid chromatography tandem mass spectrometry:
Ethyl glucuronide: 250 ng/mL
Ethyl sulfate: 100 ng/mL
Method Description
The urine sample is diluted with internal standard in 0.1% formic acid for detection by tandem mass spectrometry.(Unpublished Mayo method)
Day(s) Performed
Monday, Wednesday, Friday
Performing Laboratory

CPT Code Information
80321; G0480 (if appropriate)