You're TSH is low because you are taking T3. That's what it does. It suppresses TSH.
However, am I reading it right and your TPO antibodies are two thousand? If so, you have Hashi's, and could be having a Hashi's 'hyper' swing. But impossible to say for sure because you haven't given us your FT4 and FT3 results and ranges. We don't have enough information to give a useful reply.
Well, it's below-range, which is why they've said it's abnormal. But it's not that low, and it really isn't important because you're taking T3. And TSH doesn't cause symptoms whether it's high or low.
Serum free T3 level 4.3 pmol/L range 3.5 - 6.5 26.67%
Much too low! And that's probably what's causing your symptoms. You are very under-medicated even though your TSH is low.
Complement -third component-C3 0.75 g/L range 0.90 - 1.70
No idea what that is.
Serum parathyroid hormone 9.4 pmol/L range 2.0 - 8.5
Nothing to do with thyroid.
Serum ferritin 51 ug/L Range 10 - 291
Much too low, should be between 100, I think. But I'm not iron expert.
Serum total 25-OH vit D level 70 nmol/L range > 49
Stupid range! Can't tell much from that, but I think it should be around 100.
dsDNA binding autoantibody lev 2 ku/L range < 16
No idea what that is, either. But, once you've had an over-range result for TPO antibodies, you have Hashi's. Antibodies fluctuate all the time, but Hashi's is forever. Not much point in retesting them.
Well, that gap is too long for T3. It should be 8 to 12 hours between the last dose and the blood draw.
i used to take 25mgs of T3 and i ran out. So started doing 12 mgs only.
Could i go back up to 25mg?
I wouldn't recommend going up 12.5 in one go. Try 6.25 mcg and retest correctly after six weeks. Then, if necessary, go up by the other 6.25 to take you to 25 mcg.
Recommended that all thyroid blood tests early morning, ideally just before 9am, only drink water between waking and test and last dose levothyroxine 24 hours before test
This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip)
T3 ….day before test split T3 as 2 or 3 smaller doses spread through the day, with last dose approximately 8-12 hours before test
Eating iron rich foods like liver or liver pate once a week plus other red meat, pumpkin seeds and dark chocolate, plus daily orange juice or other vitamin C rich drink can help improve iron absorption
You may need to get consultation with thyroid specialist
Here’s link for how to request Thyroid U.K.list of private Doctors emailed to you, but within the email a link to download list of recommended thyroid specialist endocrinologists who will prescribe T3
Ideally choose an endocrinologist to see privately initially and who also does NHS consultations
Hashimoto's affects the gut and leads to low stomach acid and then low vitamin levels
Low vitamin levels affect Thyroid hormone working
Request GP test vitamin D, folate, B12 and ferritin levels
Poor gut function can lead leaky gut (literally holes in gut wall) this can cause food intolerances.
Most common by far is gluten.
Dairy is second most common.
A trial of strictly gluten free diet is always worth doing
Only 5% of Hashimoto’s patients test positive for coeliac but a further 81% of Hashimoto’s patients who try gluten free diet find noticeable or significant improvement or find it’s essential
A strictly gluten free diet helps or is essential due to gluten intolerance (no test available) or due to leaky gut and gluten causing molecular mimicry (see Amy Myers link)
Changing to a strictly gluten free diet may help reduce symptoms, help gut heal and may slowly lower TPO antibodies
While still eating high gluten diet ask GP for coeliac blood test first as per NICE Guidelines
The predominance of Hashimoto thyroiditis represents an interesting finding, since it has been indirectly confirmed by an Italian study, showing that autoimmune thyroid disease is a risk factor for the evolution towards NCGS in a group of patients with minimal duodenal inflammation. On these bases, an autoimmune stigma in NCGS is strongly supported
In summary, whereas it is not yet clear whether a gluten free diet can prevent autoimmune diseases, it is worth mentioning that HT patients with or without CD benefit from a diet low in gluten as far as the progression and the potential disease complications are concerned
Despite the fact that 5-10% of patients have Celiac disease, in my experience and in the experience of many other physicians, at least 80% + of patients with Hashimoto's who go gluten-free notice a reduction in their symptoms almost immediately.
Similarly few months later consider trying dairy free too. Approx 50-60% find dairy free beneficial
With loads of vegan dairy alternatives these days it’s not as difficult as in the past
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Blood labs results question
Latest thyroid labs help please
NP Thyroid, Latest labs
Thoughts on latest Labs? 
Low FT4 but labs say normal 
