What is hCG therapy in testosterone replacement?
hCG (human chorionic gonadotropin) is a hormone used alongside testosterone replacement therapy to preserve natural testicular function and fertility by stimulating the testes to continue producing testosterone.
Human chorionic gonadotropin, or hCG, mimics the action of luteinizing hormone (LH) in the body. When a man starts TRT, his natural hormone production typically suppresses. hCG therapy works by signaling the testes to keep functioning and producing testosterone on their own, even while receiving exogenous testosterone replacement.
Men pursuing TRT often use hCG for two main reasons. First, it helps preserve testicular size and function, preventing testicular atrophy that can occur during long-term hormone replacement. Second, and critically for men concerned with fertility, hCG maintains sperm production. Without it, sperm count can drop significantly during TRT, making natural conception difficult or impossible.
hCG is typically administered as an injection, either standalone or as part of a broader TRT protocol. Because fertility concerns and testicular preservation require individualized medical assessment, finding a provider experienced in fertility and urology alongside TRT is important for men who may want biological children or wish to maintain reproductive capacity.
The timing, dosage, and duration of hCG therapy vary based on each patient's goals, baseline hormone levels, and response to treatment. It is not universally required during TRT, but remains a standard consideration for men weighing their reproductive and physical health priorities.