Nailstat test is the first and only test to reliably report a donor’s alcohol exposure for the past 3 months. EtG (Ethyl Glucuronide) in nails is highly stable and simple to collect. Nails are made up of keratin, the same material that hair is made up of. As the nail grows, substances can pass from the blood vessels below the nail into the keratin where they become trapped. Fingernails are 4 times thicker than the typical strand of hair and often capture more of a substance than hair can. When alcohol is ingested, biomarkers of alcohol can show up 1 to 2 weeks after ingestion. Fingernail samples are clipped and collected by the donor in front of our collectors. A clipping of 2-3 mm long, (as thick as a quarter) from all 10 fingernails.