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Arch Esp Urol. 2004 Mar;57(2):147-52.

[Sperm parameters in 113 subjects after recent fatherhood did not correlate with WHO standards].

[Article in Spanish]

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Departamento de Urología, Universidad de Antioquia, Medellín, Colombia.



This is a descriptive prospective study of semen analysis in 113 men who were candidates for vasectomy as an option for fertility control after a recent event of fertility.


Each subject provided a semen sample for the analysis of volume, pH, spermatozoid concentration, mobility, and morphology. The results were compared with the reference values established by WHO.


Different from what was expected, a great proportion of these fertile subjects, 54.9%, showed at least one altered parameter in comparison to minimal values established by WHO. Generally, median values for the whole group were normal: volume 2.4 ml, spermatozoid concentration measured in Makler and Neubauer chambers 89 and 91 millions/ml, respectively; sperm mobility (A + B) 56%; vitality 78%; and normal morphology 79%.


In this group of fertile subjects we found a high probability to have altered semen parameters, which argues questions the real value and significance of sperm analysis in the diagnosis of a subfertile patient.

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