2014•American family physicianRequires access
Stable TSH Can Be Rechecked in Two Years
Allen F. Shaughnessy
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Abstract
Most patients receiving thyroid replacement therapy with less than 125 mcg of levothyroxine per day can wait two years before monitoring thyroid-stimulating hormone (TSH) levels if their results are normal. Fewer than one in 10 patients who take less than 125 mcg of levothyroxine per day with a normal TSH level will have an abnormal laboratory value one year later.