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Tag: TSI test

August 26, 2026

High and Low TSH Levels: How to Interpret TSH Test Results

Why TSH should be interpreted with Free T4, selective T3 testing, thyroid antibodies, symptoms, medications, pregnancy status, and trends.

TSH levels are best understood as part of a thyroid feedback pattern, not as a diagnosis by themselves. Thyroid-stimulating hormone (TSH) is made by the pituitary gland and tells the thyroid how strongly to produce […]

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