Postcoital testing in relation to circulating sperm-agglutinating antibodies in women.

Repeated postcoital tests (PCTs) were evaluated in couples with unexplained infertility, in couples with circulating sperm-agglutinating antibodies of the head-to-head (H-H) or tail-to-tail (T-T) type in serum, and in couples without any antibodies. The results were compared with those of PCTs in the conception cycle from women undergoing gonadotropin treatment for anovulation. Only limited differences in the PCT results were noted between couples with sperm-agglutinating antibodies, couples without such antibodies, and fertile couples.