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SEMINAL IMMUNOREACTIVE PROLACTIN BEFORE AND AFTER VASECTOMY

Seminal fluid was assayed for prolactin by radioimmunoassay in eleven healthy males 8–12 weeks following vasectomy. The results were compared with those obtained in 34 age matched subjects prior to undergoing vasectomy. The mean values (± 1 SD) for prolactin were similar (postvasectomy = 11.4 ± 3.2 ng/ml, prevasectomy = 12.7 ± 6.1 ng/ml) and there was no statistically significant difference (t= 0.66, P=> 0.05). This study shows that prolactin is found in secretions of the prostate and/or seminal vesicles.