How many THC metabolites does labcorp test for in a pre employment drug screen?

Labcorp typically tests for two primary THC metabolites in a pre-employment drug screen: THC-COOH (the major metabolite) and THC itself. The standard testing cutoff levels are set to differentiate between recent use and passive exposure. The specific details can vary based on the type of test and the policies of the employer, so it's advisable to check with Labcorp or the employer for precise information.