When I first saw this post from esh147, I really suspected s/he was trying to scare people ... but the photo of the results are problematic.
I also checked the site for this lab at Bio Med Testing
and it does look like they are on a mission (at least their own mission) to try to identify substituted synthetic urine.

At
:: Bio-Med Testing Inc :: web site says:

Adulteration/Substitutions
There appears to be an increase in adulteration products, which are commercially purchased products brought in to add to a urine sample like Urine-Aid, Urine-Luck, Turboclean, and Klear in the hopes that the donor can pass the test. Laboratories monitor specimens to show if it contains an adulterating substance or if it is a sample that is not consistent with human urine. If these are found, no drug test is conducted it is automatically considered a "refusal to test."

Wow - that is scary.

For my test from last week with quick fix, I am still thinking all went well as there is still no phone call today telling me I failed the pre-employment screening and not to show up Monday as last instructed. but I am thinking if I ever need to do this again, may be time to find someone who doesn't smoke weed (or do anything else).

But my quick fix wasn't bright yellow like the one from esh147
What's that about?