My history I was a regular user of meth I quit back in December 4 2013 and was sober up until a month and a half ago , made a bad choice and snorted a small line of dope, only that one time. I have a hair follicle test for my job in 2-3 weeks so that will put me clean a little over 2 months. Since I only used that one time after being clean 7 months is it possible to pass this test ?