Hyperprolactinaemia as a cause of male infertility in Ibadan.

Sera from normospermic, oligospermic and azoospermic adult Nigerians were analysed by radioimmunoassay (RIA) for prolactin (PRL) and testosterone (T). The mean +/- SEM DRL concentration (M.I.U./L) of 1275.00 +/- 157.90 in azoospermics and 1165.50 +/- 181.50 in Oligospermics are significantly higher (P < 0.001) than 727.60 +/- 42.60 in normospermics. The mean +/- SEM T concentration (nmol/L) of 29.60 +/- 18.20 in azoospermics and 56.50 +/- 15.50 in Oligospermics are significantly lower (P +/- 0.001) than 258.60 +/- 62.20 in normospermics.