THC can take anywhere from three to thrity days to leave your system. More regular use could take forty five days. Heavy useage could take up to ninty days.
THC, or marijuana, can stay in the blood for days, weeks or even months after you have smoked it. This is because THC is stored in the body's fat cells.
depending on your weight and metabolism approximately 30 to 60 days. However there are test available which can test human cells and tissues for nearly a year. These test are normally to expensive for routine drug testing.
