Learn About ETG

Understand how the test works so you know what to expect.

Reading Your Results

Got your test back? Here's what those numbers actually mean.

Hand sanitizer, mouthwash, and other things that might trip the test.

How calculators actually work. The half-life math explained simply.

How long does ETG stay in your system? It depends on how much you drank.

500, 100, or 50 ng/mL — what these numbers mean for your test.

Body weight, hydration, metabolism — what actually matters (and what doesn't).

A pint of craft beer isn't one drink. Here's how to count correctly.

Making sense of the curves — no math degree required.

Stop guessing. Run the numbers now.