If I passed an at Home Drug test, will I pass one at the lab?

Question

I know drugs are bad. I 'tried' weed, I possibly had 4-5 puffs almost a month ago. I have to do a pre employment screening, I was worried so I brought an at Home FDA approved test, and the results were negative for Marijuana/THC. Is there a chance that the lab will find THC that the at home test did not?

Answer 1

Only if it is a hair test. Hair has traces of thc in it at the points in your life where you have smoked it, so it will continue to have it unless you cut it above the line when you stopped smoking. But, since you only had 4-5 puffs of marijuana and it is your first time smoking, you would have been clean within days most likely! Yes you will pass a piss test which is what most employers use