What qualifies as a reason for labs to watch?

I've tested at Labcorps and failed about a week ago for a pre-employment test. I've since gotten another opportunity to test again (only this time I'm subbing) but for another place of work.
My question to you: is failing a drug test (for pre-employment) going to show up on my record, thus giving them reason to watch me the second time?

Thanks

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My question to you: is failing a drug test (for pre-employment) going to show up on my record, thus giving them reason to watch me the second time?

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For one, labs dont keep records on a specific donor passing or failing. Only the employer. Will they watch you on your second test? Not if you havent been suspected of adulteration or tampering on the first test, you wont.

They'll only know you failed if you list that employer on your application. So just don't list it.