EtG Hair Alcohol Testing in Las Vegas

How EtG Hair Alcohol Test Collection Works

Our collectors follow secure testing procedures at every step. Hair is cut with scissors from the crown of the head rather than plucked from the follicle, and a standard collection gathers a small bundle of strands. Head hair is the preferred specimen because it supports the full 90-day detection window, with roughly 30 days of history captured per half-inch of hair length. A minimum of approximately 1.5 inches of head hair is typically needed.

When head hair isn’t sufficient, body or facial hair may serve as an alternative, though body hair grows at a different rate, so the detection window and result precision are less definitive with that specimen type. Every sample is collected using tamper-proof sample collection protocols, maintaining chain-of-custody integrity from collection through analysis.

One practical detail worth knowing: EtG can take approximately 5 to 10 days after alcohol consumption to appear in hair, as the metabolite needs time to incorporate into new growth. This means very recent use may not be captured in a hair test.

EtG Hair Testing vs. EtG Urine Testing

Both tests measure ethyl glucuronide, but they answer different questions. EtG urine testing detects alcohol ingestion for approximately 80 hours after consumption, making it useful for confirming recent use. EtG hair alcohol testing extends the lookback period to approximately 90 days, so it’s the appropriate choice when a longer history matters.

Court-ordered monitoring, child custody cases, probation, and zero-tolerance programs typically require that multi-month record, which is why hair testing is commonly specified in those contexts. For standard workplace testing focused on whether someone was impaired during working hours, hair testing isn’t the typical tool since it doesn’t indicate when alcohol was consumed. If you’re not sure which test fits your situation, our team can help you figure it out.