The oestradiol test measures the level of oestradiol, a form of oestrogen, in your blood. Oestradiol is a key hormone involved in the regulation of the menstrual cycle, reproductive system, and secondary sexual characteristics. It is the most potent and prevalent form of oestrogen in premenopausal women. The oestradiol test is a critical diagnostic tool for evaluating reproductive health and hormonal balance. It provides essential information about ovarian function, menstrual irregularities, fertility, and the effectiveness of hormone therapies. By measuring oestradiol levels, healthcare providers can diagnose and manage conditions like Polycystic Ovary Syndrome, Primary Ovarian insufficiency, and oestrogen-sensitive cancers. Regular testing is important for individuals experiencing symptoms of hormonal imbalance, those undergoing fertility treatments, hormone replacement therapy, or during routine health evaluations to ensure overall well-being.