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Can't decide what to do after dilution fail at labcorp


New Member
Hi, I took drug test this Monday for pre employment drug screen, and the result came back as dilution. So, I'm gonna have to retake it tomorrow, but I can't decide if I should do substitution or just use my urine. I've been clean for 23 days now and I only smoked for a month before that. I passed home drug test (first check) with a faint line. I am assuming I can pass the drug test with my pee. But, what I'm worried about is that they might have lower cut off level since I already failed with dilution once. Does Labcorp lower the cutoff line after dilution fail?

And the thing I'm worried about using my friend's pee is that since it will have almost zero THC level and the test result from drug test I got from Monday must have higher THC level than my friend's clean pee. Are they going to think it's suspicious?

I would appreciate any advice! Thanks.


New Member
hi rkxkzks, sorry there was no response to your question, but i was just wondering...how'd you do? hope it went well and you passed, ok!
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