Shop No drawers, 92% Polyester / 8% Spandex, For Calibration and Validation of Drugs of Abuse Enzyme Immunoassays for the Detection of Amphetamines, Barbiturates, Benzodiazepines, Cocaine Metabolites, Methadone, Methaqualone, Morphine, Phencyclidine and Propoxyphene in Human Urine