This is wrong reference range as it did me in years ago.
We need to start looking at the bigger picture and the human physiology as a whole not bits and pieces. Also we need to start asking our selves why and not just addressing numbers on a paper. We need to consider what is normal for the person pathology at the time. For example, in a cancer case the doctors were treating the TSH being at 3.5 with thyroid meds despite normal levels. I call their doctor immediately and told him to stop the thyroid meds considering current situation as the TSH rising was natural homeostatic control mechanism as a protective response against the cancer itself as a result of the cell danger response. To many doctors are trying to treat the symptoms not taking into consideration the true clinical picture which is buried under the deeper biochemical levels. After learning about this and learning about tissue and peripheral thyroid cell physiology, I rarely suggest doctors use thyroid meds. BTW the drop in low t4 and high t3 seen in parameters in blood is not from thyroid pooling in the blood like STTM have been advocating. This is incorrect, it’s from PULLING to maintain homeostasis from the peripheral tissue resulting in thyroid deficient at the tissue level not the blood. The same way calcium does to maintain PH homeostasis