Blood Drug Testing

I need to know if when an at home drug test for marijuana read negative, can a lab still find it to be positiv

I bought two at-home drug test kits, (both for marijuana) and both read negative. I wanted to buy two in case the first did say negative, I wanted to test the next day to make sure, whereas if I got a positive, then I wouldn't worry about the 2nd test. Anyway both were negative, one Monday night, and the next Tuesday morning. I had to take a drug test at a company and since they sent it to a lab, I 'm wondering if the lab tests will maybe be 'stronger', which makes me wonder if they could find it to be positive. I haven't smoked in a little over two weeks, and I wasn't even a heavy smoker then.

Public Comments

1. I think you should be in the clear. good luck
2. dude it takes 30 days but if u drink lotsa water sometimes helps and low smoker too and those things to make it clean dont work
3. FIRST OF ALL I'M FROM THE HOOD LOL JUST SO U KNOW THAT I KNOW ABOUT THIS I USED TO SMOKE ...AND I WOULD GET TAKEN TO THE DOCTOR FOR A DRUG TEST BY MY PARENTS ..AND THIS IS WHAT YOU DO DRINK LOTS OF CRANBERRY JUICE DRINK ALOT OF WATER.EVERY DAY ....OH AN THIS IS NASTY BUT IT WORKS YOU ONLY HAVE TO DO IT ONE TIME CHUG A BOTTLE OF VINEGAR AS MUCH AS YOU CAN ........IF YOU DRINK ALL THIS IT WILL TAKE THE WEED OUT YOUR SYSTEM AND YOU DONT HAVE TO WORRY ABOUT GETTING CAUGHT ..TRUST ME MAN IT WORKS IVE DONE THIS SO MANY TIMES
4. Was the test that went to the Lab a urine test? That's really iffy--they have some pretty good equipment. If you had a hair test, I'm sure they would find it.