Some characteristics of azoospermic human semen.

Of 260 volume measurements and 265 fructose determinations on 257 azoospermic semen samples, the volume was normal (1-6 mL) in 78%, low in 16.7%, and high in 5.2%. The percentage of azoospermic samples with low volume was greater than that found for samples containing sperm. Mean fructose concentrations were similar in high-volume and normovolemic azoospermic samples, but significantly lower in low-volume samples. There was no correlation between (a) the etiology of the azoospermia and abnormal semen volume or fructose concentration (save for cases of obstruction and/or atrophic seminal vesicles) or (b) semen volume, fructose concentration, and serum LH, FSH, testosterone, or prolactin.