Hmmm, so you got a false positive from LabCorp? Those are much more rare, I haven’t really studied them.

I did just review my first lit package from them and noticed they use cow blood for calibration samples. Not sure what to think of that...

Blood fermenting for the purpose of BAC determination is well studied, and can lead to in vitro production of peth. Probably the first thing to check, what methods were used to prevent that?

Do you have the litigation package for your false positive?