When a semen analysis is performed and a large number of non-motile spermatozoa are observed, it is important to differentiate whether they are live or dead spermatozoa. Therefore, sperm vitality must be studied.
There are two main techniques for analysing sperm vitality. On the one hand, there is the eosin staining test. In this way, live spermatozoa will be unmarked white; while dead spermatozoa will be stained pink.
On the other hand, there is a hypoosmotic test to analyse sperm vitality. In this case, dead sperm will have a smooth tail and live sperm will have a curled tail.
Read the full article on: What values are normal in sperm motility analysis? ( 60).
By María Velasco Álvarez B.Sc., M.Sc. (embryologist), Mónica Aura Masip M.D., M.Sc. (gynecologist), Neus Ferrando Gilabert B.Sc., M.Sc. (embryologist), Rebeca Reus BSc, MSc (embryologist) and Romina Packan (invitra staff).
Last Update: 05/18/2023