Don't worry about the low FT4 it's quite common to have low FT4 when taking T3. FT3 5.14 is just shy of the 'ideal' top third of range. A small dose increase of either Levothyroxine or T3 would lower TSH and raise FT4 and FT3. Lower TSH may help reduce Hashi symptoms and antibodies as well as the gluten-free diet.
I just saw your post after reading earlier about possible gp's in Cambridgeshire. I am sorry that your gluten free so far hasn't helped antibodies. I also started on gluten free and am trying to cut dairy out which is not great as I have severe osteoporosis. However, working on the assumption I had a leaky gut I went GF only for the last couple of months and also got in touch with the Optibacs people who make the best probiotics in this country. They are always very good in responding and explained that they do not know so much about thyroiditis (the dreaded antibodies) (mine in September were over 1300 (range 0-60) don't know by how much as the GP said they are over and it's a virus but I since learned that Addenbrooke's lab range only goes up to 1300. The optibac lady suggested I get in touch with a nutritionist as regards to any foods causing inflammation (I had read about this as somewhere here on this site was posted a link done by a doctor which described the damage GF does to the wall of the small intestines) She sent me some links of qualified people and on the BANT website I found a lady who lives in Wicken Fen. Anyway, to cut a long story short, she kindly came to my house as I don't drive and I was quite surprised as to the accuracy and disappointed at some of the things that I was evidently intolerant to. In the meantime I am taking a short course of s.boulardi which is a probiotic.
It could be sheer coincidence but I had a Medichecks test done a couple of weeks back and although my antibodies are still 10 times what they should be, according to working out from the Addenbrooke's test they have reduced by about 700. Unfortunately my TSH has gone up.
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