Failed my drug test (UA) but trying to understand the results...Need help!

[Burnt Toast]

As a matter of fact it will let you know when you close to the cutoff and sending the vial in for further testing is essential to know exactly where you stand

This is incorrect. Home tests (as well as the assays used by the labs for the initial screening) are a "Pass/Fail" endeavor only. They have no ability to give a quantitative value. And without a quantitative value, you will not know how close you are to the assays cutoff threshold. All that you will know is that youve either passed or failed.

And the urine testing methodologies used by the labs are not all that sophisticated as they are portrayed to be. The lab will perform an Immunoassay for the initial screen (which functions on the same principle as the home assays, and is a PASS/FAIL endeavor only). If the sample fails the I/A screen, the sample is sent to the GC/MS for confirmation (with a cutoff threshold of 15 ng/ml) and with this methodology, a quantitative value is provided.

[bigfoot25]

Thanks for the response, Toast. I defer to you on this topic and I know you a lot regarding this topic. I am just confused as to way I passed so many test at home when I never once tried to dilute my urine just went through may day as normal, and then finding out that I failed the labs initial screening. I was sure that maybe the job set the cutoff lower than the 50ng/ml mark. I am just hoping to get an understanding to my situation because I was sure I was going to pass.
I really don't know what went wrong.

[Burnt Toast]

I passed so many test at home when I never once tried to dilute my urine just went through may day as normal, and then finding out that I failed the labs initial screening.

If your account is indeed true, not only youve failed the initial screen, but youve failed the confirmation GC/MS as well. You were provided a quantitative value (62 ng), which is a clear indicator that the confirmation GC/MS was performed.

If you are close to the 50 ng/ml level but still over by 15ng or so, could you dilute by not doing do much to alter the specimen? such as drinking large amounts of water, taking vitamin B pills, and such.

Drinking large amounts of water causes the urine specific gravity and creatinine levels to take a nosedive, resulting in a "too-dilute" ruling. Therefore, when going the dilution route, it is important to keep tabs on your creatinine and S/G. This can be done by testing the creatinine and S/G with a validity test strip. These kits are essentially the same as the ones used by the labs when performing integrity checks. They are found online by doing a Google search for "drug adulteration test kits".

[bigfoot25]

Thanks again for your response, Toast. I get everything your saying and it is all correct. But by passing the home test without diluting (again diluting a home test serves no purpose) on more than one occassion had me believing I would pass the lab test. By getting the quantative result from the GC/MS means it was sent there for confirmation for the failed initial screening. Based on my home tests results I should have passed that initial screening. If I failed the lab initial screening I should have failed the at home test but I passed 3 of them with the first on May 21st. My lab test was May 28th (a week later).

So there is no way the company I was trying to work for had a lower cutoff level than 50ng/ml for their initial test?