(WFRV) -- Each year, more than 50,000 children are born because of in-vitro fertilization.
Now, new technology is making the process safer and more successful.
"We can get pregnancy rates similar to younger women when we transfer these normal embryos back," said Doctor William Schoolcraft.
Doctor Schoolcraft says with CCS, women 35 to 37 have a 78% chance of pregnancy.
Those 38 to 40 have a 68% chance, and women up to 42 have a 62% chance.
Another technique known as vitrification is making IVF more effective when embryos have to be frozen.
"You put it in a cooling solution, and very, very rapidly, so it cools within seconds," said Doctor James Goldfarb.
With conventional, slow freezing, about 30% of embryos do not survive.
With the rapid freezing, embryos have more than a 95% chance of surviving.
Another method called ICSI is making in-vitro a possibility for more men.
Instead of placing thousands of sperm around the egg and hoping one will fertilize it, doctors take just one sperm and inject it into each egg. It's about 75 to 85% successful.
The new technologies aren't cheap. They run between $1,000 to $5,000.
That's in addition to the cost of IVF, which typically runs about $13,000 more per cycle.