Beer Info FAQ

How much alcohol will cause a positive PEth test?

How much alcohol will cause a positive PEth test?

For men, it appears that a daily consumption averaging ~2.5 standard drinks of alcohol a day (35 g/day) could produce a positive (>20 ng/mL) laboratory PEth finding. For women, a positive PEth (>0.20 ng/mL) might be produced by the consumption of 1.5–2 standard drinks (21–28 g/day) a day.

What can affect a PEth test?

The authors suggest that “relevant amounts of hidden alcohol in nutrition or medication as well as inter-individual variations of enzyme activities for the formation of PEth might cause unexpected elevated concentration levels of PEth.” Even if the PEth test is 99% specific for alcoholic beverage consumption, that