Faced with the question of which method to prepare the semen sample is better, a study evaluated swim-up and density gradients before an artificial insemination. The live birth rate was slightly higher in the density gradient group, but the difference was not statistically significant.
Read the full article on: Semen preparation: science debunks a false belief about success ( 62).
By Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist).
Last Update: 05/05/2026
