A down-regulation transfer is a step in the IVF process. If a one-time down-regulation is successful, it may take one to two months to be ready for transplant. Prior to IVF transplantation, the patient will need to take oral contraceptives for 17 days or continuous injections of down-regulation medication for 14 days, and ultrasound will be repeated after 14 to 17 days. After down-regulation, blood will be drawn to see if the sex hormones have met the down-regulation criteria. If the down-regulation criteria are met, ovulation stimulation drugs can be given, and ovulation stimulation takes anywhere from 10 to more than 10 days. When the follicles develop normally and the hormone levels in the body are normal, the eggs can be retrieved and the embryos can be transferred after successful in vitro fertilization. So after a successful down-regulation transfer protocol, it takes about a month to two months for an embryo transfer to take place if the follow-up goes well. Patients undergoing IVF transfer must choose a regular hospital and need to strictly follow the medical advice of their medical professionals.