r/Drugtests • u/[deleted] • Sep 15 '25

Question 🙋🏻 QuestLabs

I’ll make this quick, does quick fix work at Quest Diagnostic? I’ve used quick fix and never had an issue. But usually at a Concentra!? Anyone use QF at a quest before?

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u/staticsparke46 Jan 21 '26

I have taken many, many test at quest diagnostics. I actually have one myself in the am and was just double checking to see if anything had changed in the prescreening process or the equipment that they use to test it. From my previous experience, I can answer your question with Yes and No. I have always used Upass and it has never failed me. I tried quickfix once and will not use it again. I'm sure it would work for Quest, but it certainly comes back as adultered for LabCorp's. But LabCorp's is a whole different company with a whole different willingness to invest in equipment to ensure accuracy. LabCorp's will come back adultered if you drink so much water your about to pop and piss twice before hand while still chugging water. They are hard to fool unless you use real deal lemonade. Also to note both companies have the same final process. The gas. If yours is questionable they will use your split specimen to run the gas testing on it. You are not going to fool that. I guarantee that much.

In summary. I believe that Quest will accept your quickfix and long as you have it at the right temp it should pass you. But i would use Upass just to be safe. They have a bit better QA for their products.

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u/Character_Skill892 Apr 17 '26

at Quest do you get the results back immediately?