Antibodies can also fluctuate and testing them more than once is really a waste of money, because once you have Hashimoto's, you have it for life.
T4 and T3 are the hormones that your thyroid would produce if it could, so those are what you need to be testing. Of the Total T4 in your blood, approximately 90-95% is bound by protein and can't be used, therefore it's important to test the Free (unbound) portion to see what's actually available for use. Free T4 isn't used directly; it must be converted to Free T3 prior to use.
T3 is the hormone that's used by every individual cell in your body. Like T3, approximately 90-95% of the Total T3 in your blood is bound by protein and can't be used; therefore it's important to test the Free (unbound) T3 to determine what's available for use by individual cells.
While a lot of people "do" swear that going gluten free is necessary for anyone with an autoimmune disease, the idea is very controversial and there are no scientific studies that back it up 100%, so you shouldn't feel bad for not going gluten free. If one, truly, feels better not eating gluten, then by all means, they should not eat it, but there is no across the board, hard and fast rule on the subject.
I also have Hashimotos and am losing weight even tho my results mean I have an underactive but my research shows that hashimotos fluctuates your thyroid you can be underactive and overactive in the same day, so measuring your TSH is useless in some ways but an antibody test works way better. My tsh levels can be normal but my antibodies can be high. I find the best docs and specialists are your own self. I usually tell my docs and specialists now what I want. been with this disease for almost 5 years and it took my 3 years before I took control and now I feel better, I still have some symptoms here and there and that comes with hashimotos but you can control most of them and sleep better and eat better. I have OAS also which is also attached with hashimotos so I am allergic to alot of foods so going gluten free is not possible for me but alot of ppl swear by it if your autoimmune. Let me know I can give you my research areas for ya. Manon
Are you being tested for anything besides TSH? I'm specifically wondering about Free T3 and Free T4, which are the actual thyroid hormones. If you have results for those, please post them, along with the reference ranges, which vary from lab to lab.