The strength of blue tops from China
First I'd like to explain how the strength of Growth Hormone is measured.
First, the activity of Growth hormone was tested by using small animals, mostly rats. After much protest of organisations for animal welfare, the WHO asked some labs to seek the relationship between HPLC and the activity. After a lot of experimenting, scientists concluded that the activity result of the RP-HPLC (reversed phase) corresponded to the activity resulting by administration of growth hormone to small animals later these animals where killed to measure growth/strength. Then, in pharmacopoeia, the testing of activity in animals, changed to testing by RP-HPLC.
