What blood tests should be done to diagnose PCOS?

Much of the blood work that should be done in diagnosing or ruling out PCOS is the same as a basic fertility workup; however, there are a couple of additional tests for insulin resistance that should be added, as well as some cholesterol screening to evaluate general health status because of the future risks associated with PCOS. A good basic screening would include:

• Fasting comprehensive biochemical and lipid panel;
• 2-hour GTT with insulin levels (also called IGTT);
• LH:FSH ratio;
• Total testosterone;
• DHEAS;
• SHBG;
• Androstenedione;
• Prolactin and
• TSH