You Are Attending to Your 51-Year-Old Female Patient Who Has

You are attending to your 51-year-old female patient who has come to you complaining that she is losing weight, yet is continuously hungry and eating more than usual. She also reports that she is experiencing irritability, insomnia, diarrhea, muscle weakness, heart palpitations, and intolerance to heat. You suspect your patient is suffering from Graves disease. Assay for which of the following in her blood would most likely confirm your diagnosis?

A) decreased growth hormone
B) decreased vasopressin
C) elevated insulin
D) insulin receptor autoantibodies
E) thyroid hormone receptor autoantibodies