[Index of cells obtainable from semen: indicator of fertility?]. / Indice de células recuperables del semen: indicador de fertilidad?

It has been recognized that semen analysis is not a sensible nor a specific tool for detecting infertility in the male. Its predictive value is limited by the subjectivity of manual analysis, a high variability of semen parameters in fertile men and lack of correlation between sperm characteristics and fertility indexes. In this paper we present evidence supporting the concept that calculating an index of potentially fertile cells from data obtained in a regular semen analysis might be useful for predicting fertility in the male.