American Toxicology Inc. (ATI), is the ONLY laboratory in Nevada exclusively dedicated to drug testing and specializing in hair testing. ATI, established in 1982, is the largest privately owned drug testing laboratory in Nevada, offering court-approved drug testing through competent screening and confirmatory technology. ATI, does 100% of its analysis locally thereby reducing the possibility of loss, delay or misappropriation of specimens. If you have any questions or would like to send your hair samples to our lab please call 702.452.4999