What Does This Test Result For Thyroid Cancer Indicate?

What is the significance of thyroglobulin and thyroglobulin AB . S/p total thyroidectomy 10/2013 and S/p radioiodine theraphy for follicular thyroid Ca. Currently on levothyroxine 112 mcg.; TSH .038; thyroglobulin AB .9; thyroglobulin .5.F/u thyroid US 03/2015 showed no evidence of residual thyroid tissue. Does this mean free of thyroid cancer. Is the 112 mcg too much? Thanks