My doctor insisted that I be on HCG while on TRT or she wouldn't treat me, so I agree with Sam. Speaking of HCG my doctor provides me HCG from Empower Pharmacy with 6000 USP units which I dose at 30 mcg two days prior to my TRT injection. However, I just received 10000 IU of Highly Purified HCG from Purerawz which is confusing, as it's in liquid, but is significantly less in volume? Would the Purerawz need to have Bac water added?