Final answer:
If a patient 'appears' to have PCOS but their labs show a normal testosterone level, further investigation is necessary to diagnose PCOS. Additional labs can include testing for LH, FSH, glucose levels, and markers of insulin resistance.
Step-by-step explanation:
If a patient 'appears' to have PCOS, but their labs show a normal testosterone level, it is still possible for them to have PCOS. While high levels of androgens, including testosterone, are common in PCOS, they are not always elevated. PCOS can also be diagnosed based on other symptoms and test results. In this case, the doctor should order additional labs to further investigate the possibility of PCOS. These labs may include testing for other hormonal imbalances such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH), as well as fasting glucose levels and insulin resistance markers.