Effect of LH-RH loading in subfertile men.

Thirty-two infertility patients were studied to evaluate the response of plasma FSH and LH to intravenous injection of 100 microgram synthetic LH-RH. Initial LH and FSH levels were taken into consideration in evaluating the responses. While the LH response was usually more pronounced, it seemed more valuable, from the prognostic point of view, to examine the FSH changes because of their applications to the diagnostic and prognostic processes.