THC is a fat (also known as lipid) soluble drug. Meaning that the drug is stored in fat tissues and does not leave the body until it has been metabolized, which can be a slow process. In addition, not all types of marijuana have the same levels of THC. There are several factors that influence how long THC will be detected in urine drug tests:
- Body Fat
- Frequency of Use
- Consumption Amount
Other factors include overall health, lifestyle, and age. Studies show that on average, a regular user can test negative (clean) for THC within 30 days of no longer using the drug. However, THC can stay in the system for as little as 2 days and as long as 90+ days.