TSH

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The Weight-bearing Spring Imagine that TSH is a coil or spring that is standing upright and that thyroid hormone is a weight that sits on top of the spring.
The production of TSH is inhibited by the production of somatostatin by the hypothalamus.
When the TSH is elevated, this suggests hypothyroidism and when suppressed suggests hyperthyroidism.
Last updated February 27, 2004 Help! My TSH is "normal" but I think I'm hypothyroid! Mary J.
If the T4 level is low and TSH is not elevated, the pituitary gland is more likely to be the cause for the hypothyroidism.

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