Medicine TheLab investigation of a patient shows excess T4 and decreased TSH. Which of the following is the most likely diagnosis- A Grave's disease B Hashimoto's disease C Pituitary Failure D Hypothalamic failure 💡 Explanation TheLab investigation of a patient shows excess T4 and decreased TSH. Which of the following is the most likely diagnosis- ✓ Correct Answer: A. Grave's disease