I am a bit confused on the actual levels that are used in EtG testing: Most european studies I have read use .1mg, but I have read a bunch of studies referring to 100NG... they don't seem to be the same level. If the lab that is testing you is using 100ng then the detection would be much longer than what the studies that use .1mg say? Is that right? Any ideas on how much time that might add?

Also grapefruit juice in one presentation is said to reduce ETG production. The best I can find is that grapefruit juice effects or inhibits certain enzyme productions (cyp450? etc)... so does that in effect reduce the ETG metabolite? I know it will effect the metabolic rate of a variety pharma drugs.

Any thoughts out there