The aim of this study was to evaluate the clinical, hormonal, and bioc
hemical characteristics of infertile men with azoospermia. A total of
187 azoospermic out of 2610 infertile men (7.2%) were studied. Mean te
sticular volume and basal plasma levels of FSH were the most useful pa
rameters concerning the evaluation of azoospermia. Basal plasma levels
of LH and T were useful only in azoospermic men with hypogonadism, wh
ereas plasma PRL levels, semen volume, and seminal plasma fructose lev
els were not found to be of common use except in selected cases.