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A TSH, or thyroid-stimulating hormone, level of 100 is very high, and it rests well above the normal range of 0.4 to 4.2 microunits per milliliter for healthy adults. A level of 100 even greatly surpasses expected TSH levels for newborns, which reach up to 39 microunits per milliliter. A TSH level of 100 results from hypothyroidism.


Symptoms of High TSH Levels. TSH levels are important in determining thyroid health. TSH (thyroid stimulating hormone) is a hormone that the pituitary gland produces in varying amounts in order to stimulate the thyroid gland to produce hormones called thyroxine (T4) and triidothyronine (T3). Normal levels of TSH range from 0.4 to 4.0 mIU/L. TSH levels above 4.0 are considered high and result ...


High TSH Levels. A level reading above 4.0 mIU/L is considered high (elevated). What is the reason for high TSH levels? High levels typically indicates an underactive thyroid gland, which produces too little thyroid hormone. This is known medically as hypothyroidism.


What Causes TSH Level High? What causes TSH level high? It typically signals that the thyroid is under performing, also known as hypothyroidism that requires medical treatment. TSH or thyroid stimulating hormone is a hormone produced in the anterior pituitary gland. This is used to help stimulate the thyroid to produce triiodothyronine (T3) or ...


Hypothyroidism is diagnosed and monitored with a simple blood test. Learn what thyroid blood test results mean and how to understand TSH levels.


High Levels of TSH. TSH levels typically fall between 0.4 and 4.0 milliunits per liter (mU/L), according to the American Thyroid Association. Ranges between laboratories will vary with the upper ...


You haven’t mentioned the units so I’m assuming a TSH of 100 uIU/ml which is extremely high. TSH (thyroid stimulating hormone) is a hormone secreted by the pituitary gland in response to the levels of circulating thyroid hormone (especially T4). I...


A high TSH level may indicate that you have sub-optimal levels of circulating thyroid hormone in your body. This condition is known as hypothyroidism and presents with MANY diverse symptoms. If you find that you have a high TSH then your next step should be to look into the potential causes of the disease and treat that issue, if possible.


It's important to understand the meaning and possible causes of both high thyroid stimulating hormone (TSH) and low TSH, whether you have been living with thyroid disease for a long time or are only having the test to screen for a thyroid disorder. A high TSH level can mean a new diagnosis of hypothyroidism or inadequate thyroid replacement.


Even though TSH is a poor diagnostic for thyroid issues, with a TSH level that high it warrants further testing. I would suggest that you test for Free T3 and Free T4 (not Total T3 and T4), to determine if you have low- in- the- range levels, which usually lead to hypo symptoms later.