Sperm agglutination is the presence of motile spermatozoa bound together in the ejaculate.
It is evaluated (along with other parameters such as sperm concentration, motility and morphology) during the microscopic examination of the semenogram, i.e. when performing the microscopic analysis of a semen sample and, if detected, it should be noted in the results report.
We can distinguish between different types of sperm agglutination, depending on how the spermatozoa are united. Thus we can speak of head-head unions, tail-tail unions and even mixed unions.