The postcoital test. A preliminary report.

The aim of the present report is to standardize the postcoital test. A new method of evaluation is suggested by which the number of immotile and motile spermatozoa found in the cervical mucus after coitus is estimated. The estimation is based on the forward progression of the spermatozoa. A postcoital index value is determined from the motility status and number of spermatozoa, and by comparing the postcoital index values of a limited number of patients the authors tried to find an optimum cut-off index value as regards pregnancy.