This rapid on-site THC Marijuana drug test kit is FDA approved and offers 100% correlation with a much more expensive laboratory screening. Simple and effective, this urine drug test will detect the presence of marijuana in less than 5 minutes. The four step instructions printed on every foil pouch helps make these THC drug tests one of the most reliable marijuana screening devices for the home and office use, turning any bathroom into an expensive lab. Visual results are pictured on both the outside packaging and the urine cassette itself, enabling consistent results every time. The hard plastic cassette in which the THC strip rests allows the tester a more sanitary experience over dropper style drug tests or the simple strip itself. This Marijuana drug test will detect the presence of THC, the psychoactive agent is cannabis, down to 50 ng / ml and can uncover prior drug use up to four weeks since the last ingestion. Buy with confidence when purchasing a home drug testing kit.