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  1. Thyroid RT3 and T3 and tissue signaling

    by , 03-05-2013 at 12:26 AM

    This study of 403 men investigated the association between TSH, T4, free T4, T3,
    TBG and reverse T3 (rT3) and parameters of physical functioning. This study
    demonstrates that TSH and/or T4 levels are poor indicators of tissue thyroid levels
    and thus, in a large percentage of patients, cannot be used to determine whether
    a person is euthyroid (normal thyroid levels) at the tissue level. ...
  2. Dr Mariano briefly on suboptimal Thyroid numbers - T4, T3, TSH

    by , 11-10-2012 at 01:18 AM

    A Total T4 is crucial to obtain since it gives me an idea of how much thyroid hormone a person may need. The other values only give me an idea of how the other systems interact with thyroid hormone. For example, if the brain is healthy enough to produce TSH, then TSH tells me how much of a thyroid hormone deficit it is running.

    From a behavioral point of view (not an endocrinologist ...