A guide for patients, families & legal professionals
Court testing,
explained.
Understand what each test measures, how far it looks back, and what to know before your visit.
Different tests look back different amounts of time.
Compare general windows, then open a test to understand its limits.
Approximate windows, not guaranteed detection or clearance. Bars show general span, not continuous coverage or a probability. Three months is shown as 90 days. PEth can persist six weeks or longer in isolated cases; urine varies by substance and use. View sources.
Interactive testing simulator
Recent days. Older history. See what overlaps.
Combine tests on a timeline and explore what each perspective adds.
Find your test.
Choose a guide for the details that matter.
Hair drug testing
A longer view of drug use or exposure, using a small sample of hair cut close to the scalp.
PEth blood testing
An alcohol-specific blood marker that offers a view over the preceding weeks.
CDT blood testing
An indirect marker associated with sustained heavy alcohol use, interpreted with clinical context.
Urine EtG / EtS
A recent-use view of alcohol exposure through two metabolites measured in urine.
Urine drug panels
A recent-use test with panel options that must match the substances requested in the order.
Hair EtG testing
A longer-term alcohol biomarker measured in hair, separate from a hair drug panel.
No matching tests
Try “hair,” “alcohol,” or a laboratory name.
From the laboratory.
Clear explanations, with original resources a click away.