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Results 1 - 1 of 1 for Abnormal nervous system physiology
  1. Thyroxine (T4) Test: MedlinePlus Medical Test 
    ... high T4 levels. Disorders of your pituitary gland , abnormal T4 levels are usually caused by thyroid problems. ... may need a T4 test if: You had abnormal results on a TSH test. You have symptoms ... pituitary problem (uncommon) If your T4 results are abnormal, you may need more testing to find the cause. But abnormal T4 levels don't always mean you have ...
    https://medlineplus.gov/lab-tests/thyroxine-t4-test - Medical Tests