Special Promo Price this week USD 130 per pack. This is the highest grade purity you will find. Equivalent to Novo Nordisk and Pfizer Gentropin. Your blood test results from your local lab will support this claim!  Kigtropin is very popular in various sports, because of its ability to reduce subcutaneous fat, increase the growth of dry muscle mass, connective tissues. It also significantly reduces the likelihood of injuries, due to the strengthening of osteo-connective tissues, including tendons and cartilage.