Step 2: Diagnosis
There are many different causes for male infertility. Some of the most common are the following:
- Hypothalamus or hypophysis disease (Hormonal or genetic alterations affecting the correct development of sperm)
- Post-testicular defects (i.e. obstruction of the seminal ducts)
- Testicular factors (alterations in the production of sperm in the testicles)
- Idiopathic sterility (the concrete cause is unknown)
When talking specifically about the sperm, the medical field distinguishes between the following pathologies:
- Oligospermia: low sperm concentration.
- Asthenospermia: no or poor sperm motility.
- Teratozoospermia: abnormal morphology of the vast majority of sperm.
- Necrospermia: a high number of dead spermatozoa.
- Azoospermia: the total absence of spermatozoa in the seminal sample.
As most of the time, poor sperm quality does not cause evident symptoms, such as pain, it is necessary to perform a
spermiogram to receive a throughout diagnosis.
During such a sperm test the embryologists will examine the spermatozoa sample through a microscope to determine its concentration, motility and morphology.
To go a step further, some clinics like
IVF-Spain offer
advanced seminograms in which in addition to the before-mentioned tests, embryologists, with the help of artificial intelligence to minimize human error, also examine the Sperm DNA fragmentation and Y chromosome microdeletion, among others.