Before we begin, remember that I am not a professorial-level expert on this subject. Therefore what I have to say here is merely my opinion, which I think is worth adding into the discussion of this complicated subject, “Normal”, but which, I must admit, cannot be the last word. WHAT DOES “NORMAL” MEAN? In health-related fields, “Normal” is not a single number. It is a reference range or reference interval, against which a health professional can compare urine, blood or other test results in order to decide whether they are within “normal limits”. This dissertation is regarding “normal” and TSH…