A 60-year-old woman is reviewed for hypothyroidism. She has been on thyroxine 100 micrograms daily for 6 weeks. Recent TSH is 8.0 mIU/L (elevated) and free T4 is mildly low. She is otherwise well. What is the most appropriate management?AIncrease thyroxine to 112 micrograms daily and repeat TFTs in 6-8 weeksBContinue current dose and repeat TFTs in 12 monthsCStop thyroxine and repeat TFTs in 6 weeksDSwitch to liothyronineERefer urgently to an endocrinologistCheck my answer