The UTest Single Panel THC Drug Screen detects THC at 50ng/ml, the standard level of detection for most drug tests on the market. This drug test is consistent with GCMS confirmation levels. One-step, easy-to-use, self-testing device. Works for cannabis / weed intake from smoking, vaping, gummies, edibles, vape pen, synthetic THC Delta-8, Delta-10, HHC, CBN, THC alternatives, and THC that is used for medical purposes. Made in the USA. Detection window in urine: 2-90 days after use This is a general guideline. Contributing factors to the length at which THC stays in the system: Individual’s metabolism (BMI, height, weight, overall health, etc.) Frequency used Amount consumed Potency/concentration of the product consumed Metabolite: Tetrahydrocannabinol (11-nor-Δ9 -THC-COOH)