THC detection times vary by test type, lasting up to 12 hours in blood, 24-48 hours in saliva, up to 30 days in urine (on the longer side with frequent use), and up to 90 days in hair. How long THC ...

A urine test can detect THC for up to 30 days after use. THC is detectable in blood for the shortest time, up to 12 hours, but can stay longer in heavy users. Hair tests show THC use for the longest ...

Arizona dispensaries are required to test cannabis products for potency and contaminants. Testing regulations, implemented in 2020, cover potency and contamination from microbials, heavy metals and ...

This article was produced for ProPublica’s Local Reporting Network in partnership with The Denver Gazette. Sign up for Dispatches to get our stories in your inbox every week. Colorado marijuana ...

Add Yahoo as a preferred source to see more of our stories on Google. The Oklahoma Medical Marijuana Authority is working to open a state-run testing laboratory to verify product safety. The lab, ...