Controlled Ovarian Stimulation (COS)

Controlled Ovarian Stimulation (COS) is a medical process used in fertility treatments to encourage the ovaries to produce multiple eggs simultaneously. This is achieved through the administration of hormonal medications that regulate and promote the development of several follicles, which contain mature eggs. By increasing the number of eggs available, COS improves the chances of successful fertilization and pregnancy. The process is carefully monitored through ultrasounds and blood tests to ensure optimal response and timing for egg retrieval, typically before in-vitro fertilization (IVF) procedures.