I believe most of you have heard 99% purity hgh or 95% purity hgh?
HGH is mixture,just like the finished injectable Test E--250, can you say its purity is 99% or 95%?
What can be used to represent the quality of hgh? IU. IU is not a volume unit.
Some peopel think 10 iu is a full vial and 5 iu...