When the maturation of oocytes is detected by ultrasound, and the estrogen level is correct, the doctor will then be able to trigger the ovulation. For this, he will administer a hormonal drug, HCG (gonadotropic chorionic hormone), by subcutaneous injection. For insemination to be effective, it must then be carried out within 24 hours. To know the IUI treatment cost in India, visit the best IVF center.