Question on synthetic urine. Difference betrween freezdried (powdered) and pre-mixed. Product states freezdried will foam up (for males) as opposed to pre mixed. And this could be something the tech will look for in testing.
Nothing but a sales pitch based on total misinformation. People who make such claims need to do some serious research on human urine biology.
Because if they had done their research, they would know that a lack of foaming can be exhibited in any human sample, regardless of gender. And for this reason, a lack of foam is not a concern to the lab techs. A urine sample that exhibits excessive amounts of foam when the sample is shaken (due to use of some adulterants) is what sends up the red flags.