[Diagnostic value of the hypo-osmotic swelling test in pathologic ejaculation findings]

304 ejaculates with oligozoospermia from 227 partners of women suffering from sterility have been investigated by hypoosmotic swelling test, the detection of the motility rate and sperm motile efficiency. In a comparison between selected parts of the group and 104 semen samples of 15 fertile donors from the AID-program is was possible to show, that the swelling test has a better discrimination between fertile and infertile ejaculates than the other two methods. In spite of that the motility rate and the swelling test had a positive correlation (r = 0.73) in the whole group. Because of the high standard deviation of the sperm motile efficiency the diagnostic value of it is doubtful. In borderline cases of pathologic ejaculate factor the hypoosmotic swelling test is useful as a selection criterium for IVF and related techniques.