There is no limit, it depends on the number of the vitrified embryos available.
María Eugenia Ballesteros Moffa
M.D., M.Sc., B.Sc.
Bachelor's Degree in Medicine and Surgery from the University of Zaragoza, specialized in Obstetrics and Gynecology. She has a long career as a specialized gynecologist in assisted reproduction and is also an associate professor in the Department of Surgery, Gynecology and Obstetrics at the University of Zaragoza.