Passed home test for cannabis at 50ng, will I pass 20 ng lab test 2 weeks later???

So I am getting tested for my job with a cutoff of 20 ng. I was a daily smoker for about a year but only smoked tiny amounts everday, like 2 hits out of a small water bottle waterfall. I quit smoking on July 10 and after heavy cardio and drinking lots of fluids passed my first home test on July 17. The home tests I got inly test at 50 ng. Since then I've passed every home test I've taken with first morning pee. Personal stats. I am 5'8 150 pounds with a very fast metabolism. Will I be good to go for my lab test on aug. 2? I am kinda freaking out and would appreciate any and all opinions. Thanks