Canadian researchers looked at 200 children conceived using vitrified eggs.
The study in the journal Reproductive Biomedicine Online found the rate of birth defects roughly the same as natural pregnancies and IVF.
The technique involves rapid freezing of eggs to preserve them for future use.
Women are born with a set number of eggs. That supply dwindles as they age.
Freezing eggs could allow some women to have a biological child later in life.
Doctors say more research is still needed on the technique to fully establish its safety and effectiveness.