Tennekoon, K HKarunanayake, E H2009-05-282009-05-281994-03-01Tennekoon KH, Karunanayake EH. Effect of age on serum prolactin concentration in presumably fertile men in Sri Lanka. The Ceylon Medical Journal. 1994 Mar; 39(1): 11-3http://imsear.searo.who.int/handle/123456789/48365The Ceylon Medical Journal.OBJECTIVE: To examine possible age related variation in serum prolactin in men. DESIGN: A cross sectional study. SUBJECTS: Healthy married men aged 21 to 85 years with one or more children. MEASUREMENTS: Serum prolactin concentrations measured by immunoradiometric assay. RESULTS: Prolactin concentrations were significantly higher (p < 0.001) from 61 years of age onwards when compared with 31 to 60 years. Prolactin concentrations between 21 to 30 years were significantly higher than between 31 to 50 years (p < 0.05), but lower than between 61 to 70 (p < 0.05) and 75 to 85 (p < 0.01) years. CONCLUSIONS: Serum prolactin concentrations show age related variations in presumably fertile men.engAdultAge FactorsAgedAged, 80 and overFertility --physiologyHumansMaleMiddle AgedProlactin --bloodSri LankaJournal Article