At-Home THC Drug Test. Results in minutes. Up to 99% accurate. FDA Cleared. Test in 3 easy steps. Walgreens At-Home THC Drug Test is private and confidential with no personal information required. This test is a simple process that you can do in the privacy of your own home, in 5-30 minutes, giving you up to 99% accurate results. The drug test cup is a fully integrated, self-contained screening cup for detecting drugs and drug metabolites in urine. Its fully integrated design eliminates handling of urine specimen. Test in 3 easy steps: 1. Collect urine sample. 2. Securely seal cup lid. 3. Read results in 5-30 minutes. Drug: Marijuana Identifier: THC Also Known As: Cannabis, Weed, Pot, Reefer, Mary Jane, Blunt, Grass. Cannabis, most commonly known as marijuana, is a mixture of the flowers, seeds, stems and leaves of the cannabis plant. Used for recreational and medicinal purposes, marijuana can be inhaled as smoke or eaten with food. The main psychoactive chemical in marijuana, responsible for intoxicating effects, is delta-9tetrahydrocannabinol (THC). Common effects may include altered senses, impaired body movement, and increased appetite.