Did you ever get a confirmation on the QF plus? I had a pre-employment U/A today, I researched it before hand, and went with the 3 oz quick fix. Everything went well, temp was perfect, but when I got back home and was browsing the forums I noticed a post about the 5.7-1 bottles of Quickfix being an outdated formula? I wasnt aware of this at first and even if I had been I wouldnt have had time to send it in for the newer formula..She split the samples and sent me on my way, but of course I'm stressed out over it, it was Medtox labs also if it matters. Thanks in advance for your responses, this really is an awesome gathering of info.