I have read on this forum that the 8IU was a standard test. Sure you can pin 2IU's if you like. What you are trying to see is how potent the GH really is.
2IU may read 7 on the scale who knows. If you read 30 on 8IU you would have some very good GH, if you read 2 then that would be very under dosed which I think is the case with 95% of ug product out there.
I am very candid with my doc, he is younger and goes to the gym so he is fully aware what people are doing. He has no problem with me asking for this.
In the US you can go to a private lab and not even see your doc I think, maybe somebody can chime in on that. I am north of the border so we have no private clinics that take blood you have to go see your doc first.
Just pin 8IU IM and go get tested 3-4 hours later.