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AnPac Bio-Medical Science Co., Ltd., a biotechnology company, researches, develops, markets, and sells multi-cancer screening and detection tests using cancer differentiation analysis technology and device to corporations and life insurance companies in the People's Republic of China. It also offers physical checkup package services. The company was incorporated in 2010 and is headquartered in Lishui, the People's Republic of China.

CannLabs, Inc. provides cannabis testing laboratory services in the United States. Its testing services include potency testing, residual solvent analysis, microbiological testing, pesticide testing, heavy metals testing, nutrient analysis, terpenes analysis, shelf-life/stability studies, gene expression testing, and genotyping/phenotyping testing. The company also offers data/analytics and consulting, as well as education services. CannLabs, Inc. was incorporated in 2010 and is based in Denver, Colorado.

PharmChem, Inc. provides PharmChek Sweat Patch that is used to detect drugs of abuse. Its PharmChek Sweat Patch uses sweat as the source and offers alternative to urine testing for cocaine, opiates, amphetamines, PCP, and marijuana. The company was incorporated in 2000 and is based in Fort Worth, Texas.

Psychemedics Corporation provides testing services for the detection of drugs of abuse through the analysis of hair samples in the United States and internationally. The company offers screening and confirmation by mass spectrometry using industry-accepted practices for cocaine, marijuana, and PCP; amphetamines, including ecstasy, eve, and Adderall; opiates, such as heroin, hydrocodone, hydromorphone, oxycodone, oxymorphone, and codeine; synthetic cannabinoids comprising K2, Spice, and Blaze; benzodiazepines consisting of Xanax, Valium, and Ativan; and nicotine, Fentanyl, and alcohol. Its testing results provide quantitative information that could indicate the approximate amount of drug ingested, as well as historical data that could show a pattern of individual drug use over a longer period-of-time. The company offers its services to employers for applicant and employee testing; and treatment professionals, law enforcement agencies, school administrators, and parents concerned about their children's drug use. Psychemedics Corporation was incorporated in 1986 and is headquartered in Dallas, Texas.