Why don’t the menu peptides raise testosterone?
Because none of them acts on the system that makes testosterone. That system runs from the brain’s luteinizing hormone (LH) signal to the Leydig cells in the testes. The menu peptides work elsewhere:
- Sermorelin and tesamorelin prompt the pituitary to release growth hormone, which raises IGF-1, not testosterone.
- BPC-157 and TB-500 are studied for tendon, muscle and gut repair.
- GHK-Cu is a copper peptide studied for skin and healing.
- NAD+ is a coenzyme involved in cell energy.
Some men notice better energy or recovery on a peptide and assume their testosterone has gone up. It has not, and a lab test will show the difference. If low testosterone is behind your symptoms, a peptide will not fix it.
Which peptides do act on testosterone?
A small group of peptide hormones does. The WADA Prohibited List groups them as “testosterone-stimulating peptides in males”: chorionic gonadotropin (HCG), luteinizing hormone, gonadotropin-releasing hormone (gonadorelin) and its analogues, and kisspeptin and its analogues. They all work by pushing the body’s own signal harder.
Of these, only HCG is on Ultimate Male’s menu, as the brand Pregnyl. The Pregnyl label describes its action as virtually identical to pituitary LH: it stimulates the Leydig cells to produce androgens. It is approved for selected cases of hypogonadotropic hypogonadism in men, meaning low testosterone caused by a weak pituitary signal. Since 2020, HCG has been regulated as a biologic, which is why compounded HCG disappeared; our page on why HCG is hard to get explains the change.
HCG or testosterone therapy?
Both raise testosterone, but they do it differently, and fertility is often the deciding factor.
| HCG (Pregnyl) | Testosterone therapy | |
|---|---|---|
| How it raises testosterone | Stimulates your testes to make their own | Supplies testosterone from outside |
| Suits | Low testosterone from a weak pituitary signal, with testes that can respond | Confirmed low testosterone, either cause |
| Effect on the testes | Keeps them active, since they do the work | Usually lowers sperm counts, sometimes to zero |
| Form | Injection | Injections, Kyzatrex capsules or pellets |
The American Society for Reproductive Medicine notes that testosterone treatment usually leads to low or absent sperm counts, and that sperm should return within about three months of stopping. For a man who wants children soon, that matters. Our comparison of HCG vs TRT goes through the trade-offs, and our page on HCG therapy for men covers how it is used.
How do you know which route fits?
Labs answer it. Low testosterone has to be confirmed first: the AUA guideline uses a total testosterone below 300 ng/dL on two separate early-morning tests, together with symptoms. Then LH shows where the problem sits. Low testosterone with low or normal LH points to the pituitary signal, which is where HCG can help. Low testosterone with high LH points to the testes, where HCG has less to work with.
Our page on low testosterone with low LH explains that pattern in more detail.
Related question: are peptides just steroids?
They are not, and the difference explains why peptides do not suppress or replace testosterone. Our page asking whether peptides are the same as steroids covers it.
Raising testosterone at Ultimate Male
The free phone call is the first step, followed by morning labs at our San Gabriel or Downey clinic and a one-on-one consultation with a PA-C or MD. If your testosterone is low on two tests and your symptoms fit, the provider explains HCG, testosterone therapy or both, with fertility goals in the conversation from the start.
If your testosterone is normal, you hear that too, along with what else could explain how you feel. Peptides may still have a role for recovery or body composition, and our peptide therapy page explains them. For the hormone side, start with our testosterone therapy page.
