URINE FOR MARIJUANA/CANNABINOIDS( THC )*

No patient preparation is needed.

The principal psychoactive cannabinoid is delta – 9 - tetrahydrocannabinol (THC) which is released slowly from tissue storage sites. Infrequent smokers may test positive for 2 to 5 days after last Marijuana / Hashish use; Chronic smokers may test positive even 3 to 4 weeks after abstinence. False positive result may be seen with Ketoconazole.