i ve been on synthroid for 6 weeks and am due for f/u tests of tsh , t3, t4. i had surgery last week, and am taking percoset and ibuprofen . i found an endo paper that says that ibu does not affect thyroid function tests , and am wondering about the percoset, which i discontinued yesterday. should i wait a while to get the bloodwork? i dont want anything interfering with accurate thyroid function testing because these values will be used to further titrate my synthroid does if necessary.