Despite having a normal karyotype, some patients may have chromosomal abnormalities on the sperm (a higher or lower number of chromosomes than it should be) that can produce non-viable embryos in case the eggs are successfully fertilized.

The meiosis study is performed on a sample obtained with a testicular biopsy. The doctor will decide whether he requests this test or not based on the andrologist examination and/or the patient´s medical history.

Les anomalies genètiques poden ser causa d'esterilitat

Estudi de cariotip