![Altered concentrations of thyroid hormones in certain life situations - an attempt to conceptualize that contains errors - image source - Chatzitomaris, 2017. FigURe 1 | Altered concentrations of thyroid hormones in certain life situations may result from type 1 allostatic load (comprising thyrotropic adaptation, hypodeiodination, and decreased protein binding of thyroid hormones), type 2 allostatic load [showing increased thyroid-stimulating hormone (TSH) release, hyperdeiodination, and augmented binding of thyroid hormones to plasma proteins], and non-homeostatic mechanisms including methodological interferences (53).](https://medical-en.nneandersphysiologicalliteracy.com/wp-content/uploads/2021/01/Altered-concentrations-of-thyroid-hormones-in-certain-life-situations-an-attempt-to-conceptualize-that-contains-errors-image-source-Chatzitomaris-2017-300x121.jpg)
Tests of thyroid hormones. A summary statement.
We recommend the following tests to assess thyroid function: TSH, total T4, free T4, total T3, free T3.
For thyroid hormone replacement therapy, reverse T3 may also be useful, especially, for people on low carb diets or practicing caloric restriction.
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