ETG Test Guides
Find the right explanation for detection times, cutoff levels, results, false positives, and calculator math.
Detection Windows
How long ETG can show up, how to read the chart, and what changes the timeline.
ETG Detection Times
Realistic detection windows by drink amount, cutoff level, and individual variation.
Reading the Chart
How to read the curve, color zones, and 100 vs 500 ng/mL cutoff lines.
What Affects Your Results
Drinking amount, timing, metabolism, hydration, health, and cutoff level: what matters and what does not.
Cutoffs, Results & False Positives
What 100, 300, and 500 ng/mL mean, how results are interpreted, and what can affect low-level positives.
Test Cutoff Levels
What 100, 200, 300, and 500 ng/mL cutoffs mean for employment, probation, and confirmation testing.
Reading Your Results
Understand reported ETG numbers, positive/negative language, and what needs lab or program confirmation.
False Positives
Mouthwash, sanitizer, medications, and other incidental exposure risks by cutoff level.
Calculator Inputs & Formula
How the estimate works and how to count standard drinks before using a calculator.
Need an estimate instead of a guide?
Use the main ETG calculator when you want a urine test risk estimate, not a general explanation.