Posted 1/21/2014 1:02 AM (GMT -6)
If you were on 10 mg Carbimazole, then this is why your TSH is high, since this medication is an anti thyroid medication.
Why were you put on Methimazole ? since your TPOab and TGab are elevated, indicate an autoimmune thyroiditis, this can be Hashimoto or Graves.
The solution to your high TSH(hypo) is not adding Levo, but reducing the dose of Carbimazole, or even stopping it if you are not hyper, however, don't change your dose without an instruction from your doctor,don't self medicate your self.