Faint line on home drug test

Ok so I just took an at home test for marijuana and while I passed, the lower line for a negative result was very faint but still there. I havent smoked in 2 weeks and I have a test tommorow at this drug/alcohol evaluation thing. I also am gonna drink some Body Clean Blend a few hours before my test which is from 4-5 oclock tommorow. My question is whether or not the faint line makes a difference and if it could show up positive or matter to the person testing me on a different test. Also has anyone ever used the body clean drink??? do i just drink it and its effective in an hour for up to 5 hours or should I even use it since I technically passed my home test?
any answers as soon as possible would be appreciated thanks

A faint line is still a line. Test is negative.

Magic detox potions are a scam. When they do work, they acccomplish the same thing thats accomplished when one follows the Dilution guidelines posted in the Stickys. Forget the magic potions and save your money.