DOI: 10.1373/clinchem.2012.202283


A 44-year-old Caucasian male was transferred to our hospital for increased concentrations of thyroid hormones and constitutional symptoms, including fatigue and muscle tenderness of 6 weeks' duration. Four weeks before admission, the patient's primary care physician found a diffuse goiter and ordered thyroid hormone testing (Table 1). Two weeks later, the patient developed generalized muscle pain and began a weight loss of 10 pounds until the day of admission.