I have got to have a lump removed from my wrist, and have got to have a general anesthetic, and had my pre op checks at the hospital. My last TSH level in December was 0.09. It had been 0.17. I am on 150mcg of levothyroxine and have Hashi's. I have been told that my TSH levels are far too low for an op, and the anesthetist will not do it past 0.05. I had to have another blood test to check it again, and the hospital are going to contact me. Has anyone else had this happen to them?