EVERYTHING ABOUT HOW LONG DOES MARIJUANA (WEED) STAY IN YOUR SYSTEM?

The heaviest staying the 1st two months of September I smoked a complete of 3 joints over two weeks (broke them up and smoked bowls). I took a drug test yesterday for work at day 21 abstinent. I'd self tested with 50ng/ml cups and handed People but I’m worried the UDS I took was a 20ng/ml take a look at.The cannabinoid receptors CB1 and CB2 are f