History May Solve TSH Elevation Mystery

December 1, 2007

Sometimes, despite compliance with prescribed thyroid medication, a patient's thyroid-stimulating hormone (TSH) level remains high.

 

Sometimes, despite compliance with prescribed thyroid medication, a patient's thyroid-stimulating hormone (TSH) level remains high. To clear up the mystery, ask the patient about other medications he or she takes-including vitamins, supplements, and over-the-counter agents. Some of these (eg, iron, calcium, bile salt resins) bind levothyroxine and hinder its absorption.

---- Mohammed Basha, MD
      Gainesville, Fla

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