I recently went off levothyroxine for a few months, I wanted a 'clean-slate' for my labs. (Diagnosed Hypo Fall of 2007). My labs just came back within normal range (both antibodies, T3 Total, Free T4, reverse T3), except for my TSH, at 9.15. My general practitioner wants me to start back on 100mcg and get rechecked in 6 weeks. He wants me to be firm on taking it first thing in the morning, and not taking any other medications/vitamins for at least 2 hours (Biotin, birth control, singulair, spironolactone). My questions is, why would everything be 'normal' except my TSH?