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Updated: Aug 19, 2026

Sperm Collection of Differential Quality Using Density Gradient Centrifugation
Published on: November 29, 2018
[Index of cells obtainable from semen: indicator of fertility?]
C A Villanueva Díaz1, M A Díaz Pérez, H Villegas Castrejón
1Departamento de Fisiología de la Reproducción, Instituto Nacional de Perinatología, México, D.F.
Abstract:
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.
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