does the legal drug k2 show up in a urine drug test?

K2 does not show up on a urine test…yet. As it becomes more popular and laws change, urine tests may be modified to detect K2. Marijuana contains a chemical called thc (tetrahydrocannabinol), this is what is detected in a drug test. K2 does not contain thc. K2 is slowly becoming illegal on the state level with some states even passing emergency legislation to regulate its sales.