Calculate the EtG test timeline
Earlier / more often detectable
This timeline converts dates accurately, but its detection band is educational—not a prediction of a urine result.
Important: the elapsed hours are exact for the dates entered. The detection band is not. Only a collected urine test can determine whether EtG is above a laboratory cutoff.
How to read the timeline
Earlier time points are generally more likely to remain detectable. Sensitivity declines over time and can fall sooner after light exposure or at a 500 ng/mL cutoff. Heavy or repeated drinking and a lower cutoff can extend the window.
What the timeline cannot know
- Your measured EtG or EtS concentration
- Urine creatinine or sample dilution
- Renal function and individual metabolism
- The laboratory method or policy unless you enter the correct cutoff
For a fuller estimate using standard drinks and drinking pattern, use the EtG urine calculator. If you have an actual quantitative concentration instead of just elapsed time, the EtG half-life calculator projects it forward using a published decay range. Read the EtG detection-window guide for the research context.