HRTstudent

http://www.holtorfmed.com/index.php?...ads&file_id=12

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. ...