In the bodybuilding space, hCG is increasingly using in combination with various AAS cycles. When exogenous AAS enters a man’s body, the natural negative feedback loop causes the body to shut down its own testosterone production by turning off the hypothalamic-pituitary-gonadal axis (HPGA). This can lead to testicular atrophy, etc. They commonly use hCG to maintain and restore testicular size …
hCG is administere primarily by intramuscular injection (IM), but also subcutaneously (SC). The average (3ml 22-25G x ½-1 ½”) syringe was sufficient for IM injection. But an insulin syringe (½-1ml 28-30G x ½-1″) was recommended for SC injection. The study found little difference in results between intramuscular and subcutaneous injections. The only difference is the speed of release at the …