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Keywords:

  • Immunobead test;
  • IBT;
  • sperm antibodies;
  • urethritis;
  • normal men

ABSTRACT: The incidence and specificity of sperm antibodies was examined, retrospectively, in a group of 80 normal men (64 sperm donors and 16 prevasectomy patients). Seven (8.5%) were positive for sperm-bound antibodies by immunobead test (IBT), but the antibodies were restricted to the sperm tail-tip. There was a higher (p < 0.001) incidence of nongonococcal urethritis (NGU) in the IBT-positive men, suggesting a possible causal relationship.