Follicle-stimulating hormone, luteinizing hormone, and testosterone levels found in human seminal plasma.

Radioimmunoassays were performed on the seminal plasma of normospermic, oligospermic, and azoospermic men to determine the levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone. FSH levels in the seminal plasma of all three groups were found to be similar to the levels normally found in blood serum. LH levels in the seminal plasma of azoospermic and oligospermic men were within the normal range found in blood serum but were elevated in the normospermic samples. Testosterone levels in the seminal plasma of all three groups tested were considerably lower than the normal range found in blood serum.