I have a drug test coming up for nursing school next Monday. The last day I smoked was July 3rd, but I was kind of a heavy smoker. I would smoke the pens. I am still failing every single drug test I take even after using detox’s. I have been drinking plenty of water and sweating. I have even been taking Niacin pills. I’m not sure what else to do besides have someone pee for me. Does anyone have any suggestions? Also, does anyone know if they test for gender?