Medicine The Lab investigation of a patient shows.↓T4, & ↑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 The Lab investigation of a patient shows.↓T4, & ↑TSH. Which of the following is the most likely diagnosis - ✓ Correct Answer: B. Hashimoto's disease