Growth hormone (GH, somatotropic hormone, growth hormone, HGH, somatotropin, somatropin) is a peptide hormone of the anterior pituitary gland, which is used in sports for the formation of muscle relief. Growth hormone or somatotropin got its name because of the fact that it causes a pronounced acceleration of linear (in length) growth in young people, mainly due to the growth of the long tubular bones of the limbs.
The base concentration (rate) of growth hormone in the blood is 1-5 ng/ml, during peaks it can rise to 10-20 and even 45 ng/ml.
In men with low testosterone and FSH. LH stimulates the production of testosterone, and FSH promotes the formation of sperm.