Disturbances of the interaction between spermatozoa and cervical mucus can cause subfertility or infertility. The diagnosis of such a disturbed interaction is possible with simple laboratory tests. Oligomucorrhoea and dysmucorrhoea are the most frequent causes of a disturbed sperm--cervical mucus interaction. Antispermatozoal IgA plays a quantitatively limited, but qualitatively important role. Sophisticated time-consuming laboratory investigations have mostly only additional value for the diagnosis.
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Kremer et al. (1988) studied this question.