TABLE 1. Nomenclature for semen variables.
Classification | Definition |
Normospermia | Normal ejaculate as defined in Table 2 |
Oligozoospermia | Sperm concentration <20 x 106/ml |
Asthenozoospermia | Fewer than 50% spermatozoa with forward progression or fewer than 25% spermatozoa with rapid linear progression |
Teratozoospermia | Fewer than 30% spermatozoa with normal morphology |
Oligoasthenoteratozoospermia | Signifies disturbance of all three variables (combination of only two prefixes may also be used) |
Azoospermia | No spermatozoa in the ejaculate |
Aspermia | No ejaculate |