Endometrial preparation will be performed during 2-5 days after patient’s period starts. The doctor will arrange date and time for embryo transfer by considering ultrasound images together with blood results for hormonal testing in order to ensure the patient has a good uterine cavity. The uterine cavity that is suitable for embryo transfer should has these characteristics as following:

• 8-10 Millimeters thickness (not over 14 mm.)
• 3 Layers of uterine lining, smooth, visible middle line
• Not thickset or dense
• No fluid inside

Once the patient has a perfect endometrium for embryo transfer, the doctor will prescribe some oral medicines and vaginal suppositories for the patient to take in 5 days before the transferring day. After that, the doctor will schedule date and time for the embryo transfer.