ETG Test Guides

Find the right explanation for detection times, cutoff levels, results, false positives, and calculator math.

Realistic ETG Detection Times at 500 ng/mL (by Drink Count)

Hour-by-hour clearance windows at the standard 500 ng/mL cutoff—broken down by how many drinks you actually had.

How long ETG can show up, how to read the chart, and what changes the timeline.

Realistic detection windows by drink amount, cutoff level, and individual variation.

How to read the curve, color zones, and 100 vs 500 ng/mL cutoff lines.

Drinking amount, timing, metabolism, hydration, health, and cutoff level: what matters and what does not.

What 100, 300, and 500 ng/mL mean, how results are interpreted, and what can affect low-level positives.

What 100, 200, 300, and 500 ng/mL cutoffs mean for employment, probation, and confirmation testing.

Understand reported ETG numbers, positive/negative language, and what needs lab or program confirmation.

Mouthwash, sanitizer, medications, and other incidental exposure risks by cutoff level.

How the estimate works and how to count standard drinks before using a calculator.

How the half-life model works, where estimates come from, and why results need a buffer.

Count beer, wine, liquor, and strong pours before using any ETG calculator.

Use the main ETG calculator when you want a urine test risk estimate, not a general explanation.