The last TSH test I took; one year ago. Been on Iodine for 10 years; came out fine. I took Iodine as usual the days before. But then again I do not have hashimotos. The tests in general (my opinion) are beyond par. A patient where I work came out hyper thyroid from tests; where she clearly was hypo. Even the doctor saw this and ordered another test. Came out "normal" Could be the wrong time of the day to test. I trust my on my own symptoms only.