^^^^ impossible in my opinion.... Each lab makes it a little bit different and the amount the body uses can be different with each lab. As far as the cost thing, ya it may be easier for us to pay for them, just as it is easier for us to pay for the docs and physicians as well as perfect diet and facility. So i agree with pistolstarta as there is no way to say that you can use a specific amount because each person's will use more or less than the next one.
"dirty d"