I see yours took 6 days.... Ya i didnt use supplements eitheir just because all the tests i have ever seen them give were in house tests(dipstick) i wasnt even expecting a test and i surely wasnt expecting a lab test. I just drank hella water like 1.5 gallons and pissed about 5 times i didnt even test myself before because ive gone through so many home tests and i know that if i smoke 5 days and stay clean 10 days ill b clean(with very dark line) if i just drink water of course after i gave the sample i went and bought one just to make sure..... So 6 days for you been 8 days for me and u only drank water and didnt come back dilute or positive. Maybee im good then. I will keep ypu posted and u do the same