Novo Nordisk from Denmark have developed a growth hormone product that can be injected weekly. Levels of IGF-1,IGF binding protein-3 and free IGF-1 remained elevated one week after a single injection, It also looks like the injection were well tolerated with no side effects, I'm sure this hormone would become very popular within bodybuilding groups.
http://jcem.endojournals.org/cgi/con...ract/95/7/3411