Immunoglobulin E in serum and semen of infertile men.

Determination of IgE level in serum and semen of 92 men by an enzymatic immuno-assay method verified its presence in semen of most of them (92.3%) in much smaller amount than that present in serum (2.6%). IgE levels in serum and semen were significantly correlated. Serum levels were significantly higher in men with obstructive azoospermia, specially when associated with infection. Serum levels of IgE were higher in the fertile men, and in cases without infection as compared with those with prostatitis though this difference was not significant.