The pituitary may increase TSH production in response to low levels of thyroid hormone production in the thyroid gland. This can cause TSH levels to be higher. Pituitary failure can be caused by a ...

TSH levels higher than 4.5 mU/L usually indicate an underactive thyroid (hypothyroidism), and low TSH levels—below 0.4 ...

Modern-day TSH methods however, with their enhanced sensitivity are also capable of detecting the low TSH values typical of hyperthyroidism. These new methods are often based on non-isotopic ...

TSH is a chemical messenger that works like a thermostat, signaling your thyroid to increase or slow down thyroid hormone production. When you have low thyroid hormone levels, your pituitary gland ...

Traumatic brain injury and aneurismal subarachnoid hemorrhage might cause lesions in the hypothalamic ... is frequently associated with low serum TSH concentrations. A case of isolated TSH ...