The FISH test is an accurate technique to evaluate the frequencies of numerical chromosomal abnormalities in a cell.
When carried on sperm the FISH allows us to determine the percentage of diploids (basic chromosome number doubled) and aneuploids (abnormal chromosome number) which can decrease fertility. The main inconvenient of this test is that only a limited number of chromosomes can be analyzed.

The FISH on sperm is particularly recommended in patients with oligo, asteno and/or teratozoospermia, abnormal karyotype or when the meiosis study shows alterations.

Les anomalies genètiques poden ser causa d'esterilitat

Estudi de cariotip