Health

EtG Calculator

Estimate a urine EtG detection window by standard drinks, elapsed time, drinking pattern, and the cutoff your test uses.

Calculator

Detection Window Estimator

1

Drinking Pattern

2

12 oz beer, 5 oz wine, or 1.5 oz spirits = 1 standard drink

3

Time since your last drink finished

4

Test Cutoff Level

Estimated Result

Detection Window

High risk
At 12 h since the last drink, this is still before the 500 ng/mL window. Estimated negative window: 24.5-54.5 h.

Likely Negative

24.5h

Range: 24.5h

Conservative

54.5h

Wait 42.5h more

Selected Cutoff

500 ng/mL

Time Range

24.5h — 54.5h

Preset Comparison

100

42.5h — 92.5h

250

32.5h — 70.5h

500

24.5h — 54.5h

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