A Dialogue with Utiger: T3-based thyroid therapy over-suppresses TSH

Robert Utiger, M.D. (1931-2008) is well known in endocrinology as the father of the TSH test. Despite his trust in the TSH test, in his publications he acknowledged that TSH behaved very unnaturally in response to T3 levels in blood while dosing T3 thyroid medication. What Utiger discovered in the 1970s and 1980s about the …

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