Sermorelin, or GRF 1-29, has 29 amino acids in it to represent the GHRH 1-29 fragment. It is basically a synthetic form of GHRH that can increase bone density and muscle mass, decrease body fat, and improve the immune system and organ functions. To date, it is known to be the shortest functional GHRH fragment out there. It is also known to be the safest alternative for human growth hormones, in general. The synthetic amidated acid peptide acetate salt, sermorelin acetate, has 29 amino acids in total, all of which correspond to the 44-amino-acid segment of natural GHRH. It can make the pituitary gland react and create more natural human growth hormones, as well, and create more IGF-1 in the liver for a ton of positive benefits in the end. Sermorelin’s growth hormone therapy also provides more IGF-1 in the blood, which results in bone and organ cell growth and faster metabolism overall. Since these increases happen because of the pituitary gland, there is no way that too much growth hormones will be produced, either. Aside from that, sermorelin seems to be well-tolerated, too. This just goes to show that it works well as a provocative growth hormone deficiency test overall.