The eosin test marks dead spermatozoa, with damaged membrane, violet/purple. On the other hand, live spermatozoa remain white, since their membrane is intact and cannot penetrate the dye.
The man should obtain the semen sample by masturbation, maintaining a period of abstinence of approximately 3-5 days for the results to be reliable.
Read the full article on: Which Methods Are Used to Assess Sperm Vitality? ( 39).
By Álvaro Martínez Moro B.Sc., M.Sc. (embryologist), Andrea Rodrigo B.Sc., M.Sc. (embryologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Sergio Rogel Cayetano M.D. (gynecologist) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 02/28/2022