I agree with your statement that most docs make a diagnosis solely on test results..Forget about what the patient's symptoms are since they say the test never lies!!, so they say. All testing methods are not 100% and I think docs should come to a conclusion based on the physical evidence(which is what your body is showing). I suffered severe muscle spasms , fatigue, joint pain, headaches and all that good stuff. Doc was quick to call it fibromyalgia and told me to enroll in stress management and exercise more..gathererd my medical records to transfer to a different doc. Found in my records that a D level was taken in 2007 showed 6.8!!!  To this day my D levels only will stay up with 50,000U a week.