The sperm DNA fragmentation test distinguishes those spermatozoa with intact DNA from those with damage to the DNA chain.
When damaged sperm are placed in an acidic environment, the fragmented DNA strand does not unroll and therefore we do not see a halo around it.
Read the full article on: Male Fertility Testing – How Do You Know if You Are Infertile? ( 27).
By Andrea Rodrigo (embryologist), Dr. Joel G. Brasch (gynecologist) and Romina Packan (babygest staff).
Last Update: 02/21/2019