Thyroidectomy Medical Question:
A patient undergoes successful thyroidectomy for Graves’ disease and returns to a euthyroid state with the use of levothyroxine supplementation. In a follow-up examination, the patient reports resolution of all prior symptoms except for anxiety and irritability. She also reports frequent muscle spasms. On physical examination, tapping over the facial nerve elicits facial muscle spasm. An ECG shows QT prolongation. Which of the following most likely describes the current laboratory values of this patient?