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Drug Screening

Alcohol (EtG)

An EtG urine test is a qualitative screening that detects the presence of ethyl glucuronide (EtG), a direct metabolite of ethanol. EtG can be detected in urine for up to 80 hours after alcohol consumption, making it a sensitive biomarker for recent alcohol exposure.

Doctor's Assessment Included

What It Measures

This test detects the presence of ethyl glucuronide (EtG) in urine. EtG is a phase II metabolite formed when ethanol is conjugated with glucuronic acid in the liver. Unlike ethanol itself, which is eliminated from the body within hours, EtG persists in urine for a significantly longer period.

The test provides a qualitative result indicating whether EtG is present above the assay cut-off level, serving as evidence of recent alcohol consumption.

Why It Matters

EtG testing extends the detection window for alcohol use far beyond what standard breath or blood alcohol tests can achieve. This makes it particularly valuable for abstinence monitoring programmes, treatment compliance verification, and clinical assessments.

The sensitivity of EtG testing means it can detect even low-level alcohol exposure, providing a reliable tool for situations where alcohol abstinence must be verified.

When to Test

Testing may be relevant for alcohol abstinence monitoring, substance abuse treatment programmes, workplace compliance, and legal or forensic evaluations. EtG is detectable for up to approximately 80 hours after alcohol consumption.

Consult a healthcare professional for guidance on testing frequency and interpretation of results in the appropriate clinical context.

Frequently Asked Questions

How long can EtG be detected in urine after drinking?
EtG can be detected in urine for up to approximately 80 hours (about 3.5 days) after alcohol consumption. The exact detection window depends on the amount consumed, individual metabolism, and hydration levels.
Can EtG testing produce false positives?
EtG is highly sensitive and may detect incidental alcohol exposure from sources such as hand sanitisers, mouthwash, or certain foods. Confirmatory testing and clinical context are important for accurate interpretation of results.
What should I expect from an EtG urine test?
The test involves providing a urine sample, which is analysed for the presence of ethyl glucuronide. Results are qualitative, indicating whether EtG is detected above the assay threshold. A confirmatory test using mass spectrometry may follow a positive screening.

Tests with related values

These panels measure values from the same category as this marker.

Alcohol (EtG)

€149,-