Hi ! I am 24. Weight: 155 LB and Height: 6 FT. I am skinny. I smoke rarely. First time I smoked weed couple of times in March 2010. I smoked weed couple of times in April and I was clean for May, June and mid July. I took one hit of weed using pipe before 11 days (April 28, 2010). I have drug test at Labcorp on August 9. I took 4 first check home drug tests (50 ng/mL) for weed and I passed all of them with good visible Test line. All the home drug test test lines were visible in a minute. My question is Will I pass drug test at Labcorp ? Please I need some feedback. I will really appreciate.