hey N2 i substituted last thursday and its been a week and i havent heard from the employer or drug screening place....is that ok or do you think something is up? i actually got the urine from a freind that is 100% clean no doubt...i got it and and used it within an hour...and they checked the temp right infront of me and it was 94 degress so everythign went perfect...but is it supposed to take this long? im starting to get a little nervous....thanks man for the help though through your guide its perfect, great work! i've showed it to a few freinds and they will be subing as well..you rock.