[Diagnosis of male infertility]

The diagnostic methods for male infertility in our clinic are reviewed, and the following are emphasized. In azoospermia, examinations for obstructive azoospermia such as testicular biopsy should be made focussing on patients with 10 ml or higher testicular volume and with 20 mIU/ml or lower serum FSH level. In hypospermic patients, examination of post-ejaculated urine and ultrasonotomography examination of prostate are necessary for the diagnosis of incomplete retrograde ejaculation and obstruction or stenosis of the ejaculatory ducts.