Levothyroxine (L-T4) and not dessiccated thyroid, is the preferred long ... be assessed using age-specific and method-specific reference ranges (Table 3). A serum TSH level between 0.5 and 2.0 ...

the production of thyroid hormone is disrupted, and the goal of treatment is to restore them to the reference range. "But in ...

Optimally, the lowest possible dose should be used to maintain maternal free thyroxine levels at or just above the upper limit of the normal nonpregnant reference range. Fetal thyroid function ...