There are three different ways to make the diagnosis of PCOS: 

• Symptoms and physical findings,
• Hormonal testing and
• Ultrasound.

Probably most individuals will have abnormalities in all three, some only in two, and possibly only in one. Some may argue that findings in only a single category may not constitute PCOS. But, until we have PCOS better characterized, or find a different diagnosis for these patients, the diagnosis of PCOS should remain. The most minor of apparent problems may have significant implications for future general health and well-being.