Human Chorionic Gonadotropin (hCG) for Male Hypogonadism (Low Testosterone) and Fertility

Human chorionic gonadotropin, commonly called hCG, is a medication that mimics luteinizing hormone, or LH. In men, LH binds to receptors on Leydig cells within the testes and stimulates the production of testosterone. This makes hCG particularly relevant in selected cases of secondary hypogonadism, where the hypothalamus or pituitary does not provide adequate gonadotropin stimulation but the testes remain capable of responding.

The clearest indication for hCG is hypogonadotropic hypogonadism. These patients typically have low testosterone with low or inappropriately normal LH and FSH. Causes may include congenital GnRH deficiency, pituitary or hypothalamic disease, previous anabolic steroid exposure, opioid use, or other forms of central suppression. In this setting, hCG can increase intratesticular and serum testosterone while maintaining testicular activity. In contrast, men with primary testicular failure and elevated LH are less likely to respond because the testes are already receiving substantial endogenous stimulation.

Unlike conventional testosterone replacement therapy, hCG does not directly replace testosterone. It stimulates the testes to produce testosterone internally. This distinction is important for men who wish to preserve fertility, because external testosterone suppresses LH and FSH and can markedly reduce sperm production. Guidelines advise against testosterone monotherapy in men actively pursuing fertility.

For fertility treatment, hCG is often used first to restore testicular testosterone production. If sperm production remains inadequate, follicle-stimulating hormone may be added because hCG primarily provides LH-like activity rather than direct FSH stimulation. Treatment may require several months, particularly in men with longstanding gonadotropin deficiency, very small testes, or absent baseline sperm production. Gonadotropin therapy with hCG, with or without FSH, can induce spermatogenesis in many appropriately selected men with pathological hypogonadotropic hypogonadism.

Some clinicians also use hCG alongside testosterone therapy to reduce testicular atrophy or help preserve intratesticular testosterone. However, fertility preservation is not guaranteed, and semen analysis remains more informative than testicular size or symptoms alone.

For patients seeking information about hCG treatment in Kitchener-Waterloo, assessment should include repeat testosterone testing, LH, FSH, prolactin, relevant pituitary evaluation, and discussion of current or future fertility goals. At a clinic such as True North Metabolic, hCG could be considered according to the underlying diagnosis rather than used routinely for every man with low testosterone.