USDTL resource guide
Urine EtG / EtS
Ethyl glucuronide and ethyl sulfate
A recent-use view of alcohol exposure through two metabolites measured in urine.
The approximate testing window
A visual reference for this specimen.
Approximate window, not guaranteed detection or clearance. The bar shows a general span, not continuous coverage or a probability. Shaded ends represent the stated range. Review the limitations and sources below. View sources.
What this test tells you
EtG and EtS are alcohol metabolites that may remain detectable after ethanol itself. USDTL describes a short window of about one to three days; research shows that detection can last longer in some circumstances.
What collection involves
Follow the collection instructions for the ordered urine test. Ask whether EtG, EtS, or both are included.
Keep in mind
A positive result alone cannot establish impairment or an exact time or amount of drinking. The chart is not a guarantee of detection or clearance.
A common question
Does a routine urine drug panel include EtG and EtS?
Not necessarily. Check the exact order and analyte list rather than assuming alcohol metabolites are included.
Read the original resources.
Source material behind this guide.
- USDTL · Made in the bloodAlcohol biomarkers and limitations of urine and hair testing.
- USDTL · Urinary EtG and EtS researchResearch showing substantial differences in detection times between individuals.
- USDTL · Urine testingLaboratory urine testing, panel selection, and confirmation.
Reviewed October 26, 2026. Laboratory guidance can change; the current order and report take priority.