In cases of testicular biopsy, ICSI must be used as an oocyte insemination technique, because these are immature spermatozoa that have not matured physiologically on their way to the epididymis. Moreover, the sperm count after the biopsy is usually low, insufficient for artificial insemination or conventional IVF.
Why is ICSI the only technique that can be used in cases of testicular biopsy?
By Javier Alfonso Grasa (senior clinical embryologist).
Last Update: 01/10/2019
Javier Alfonso Grasa
BSc, MSc, PhD
Senior Clinical Embryologist
Bachelor's Degree in Veterinary Medicine from the University of Zaragoza, with a Master in Assisted Reproduction Techniques from the University Hospital La Fe of Valencia and PhD in Biotechnology from the the Polytechnic University of Valencia. Senior clinical embryologist certificate by ESHRE and ASEBIR.