"Bianco noted that clinicians today, following guidelines set by the American Thyroid Association, use TSH and T4 levels in the blood as the key indicators of thyroid health of hypothyroid patients treated with levothyroxine. “Only rarely will physicians obtain T3 levels directly in the diagnosis or treatment of hypothyroid patients,” he said.
But Bianco believes that paying closer attention to plasma T3 could lead to better quality of life for patients with lower-functioning thyroids – a finding supported by his previous studies, as well as work by other researchers. Bianco believes a focus on plasma T3 as a diagnostic indicator could also stimulate pharmaceutical companies to develop better drug delivery systems to normalize plasma levels of T3. This will be one of the topics discussed at the American Thyroid Association Spring Symposium and Research Summit 2013 to be held April 25-26 in Washington, D.C. The conference is co-chaired by Bianco, with the overall theme of “Treatment of Hypothyroidism: Exploring the Possibilities.” "