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What is sperm FISH?

By Blanca Paraíso M.D., Ph.D., M.Sc. (gynecologist on Love Fertility Clinic).
Last Update: 09/02/2019

FISH is a cytogenetic analysis technique that allows the identification of sperm chromosomes in an ejaculate or testicular biopsy sample. It determines the chromosomal endowment, expressing the percentage of spermatozoa that present alterations.

Usually 5 chromosomes are analyzed, 13, 18, 21, X and Y, as they are the most frequently affected chromosomes that can give rise to viable gestations. However, this study can be extended to other chromosomes.

 Blanca Paraíso
Blanca Paraíso
M.D., Ph.D., M.Sc.
Gynecologist on Love Fertility Clinic
Bachelor's Degree in Medicine and Ph.D from the Complutense University of Madrid (UCM). Postgraduate Course in Statistics of Health Sciences. Doctor specialized in Obstetrics & Gynecology, and Assisted Procreation.
License: 454505579
Gynecologist. Bachelor's Degree in Medicine and Ph.D from the Complutense University of Madrid (UCM). Postgraduate Course in Statistics of Health Sciences. Doctor specialized in Obstetrics & Gynecology, and Assisted Procreation. License: 454505579.