Whether for thyroid disease or thyroid surgery, blood tests for thyroid function is indispensable. However, there are too many test items, and many patients found the high or low arrow on the laboratory report (often prompted to anomalies), which can frighten a lot of patients. In fact, there are different meanings for the anomalies in these test results, and many of them do not need to worry. So what are the implications of these results, and how to explain the different diseases?