Here there I was diagnosed with Hashimotos Thyroiditis a couple of years ago & have been trying to balance my medication. I still feel unwell but my GP said my results are ok.
Serum TSH level 1.3 mu/L
Serum free T4 15.2 pmo/L
Serum T4 (XaERr) 15.1 pmol/L
Serum 3 triiodothyronine 3.9 pmol/L
Vitamin D 115.2 nmol/L
Vitamin B12 345 ng/L
Serum ferritin 69 ug/L
Serum follicle stimulating hormone level 44.1u/L
Thank you so much
Dancing Queen
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Dancing-Queen
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They did not test for folate. Since my results I have been taking a Vit B complex tablet & feel better in my mood & energy levels. Not sure if it’s placebo!!!
All thyroid tests should ideally be done as early as possible in morning and fasting. If on Levothyroxine, don't take in the 24 hours prior to test, delay and take straight after. This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, GP will be unaware)
Is this how you did the test?
What's the FT3 range?
FT4 probably too low at 15. Should be nearer 18-20
FT3 looks low
Dr Toft, past president of the British Thyroid Association and leading endocrinologist, states in Pulse Magazine,
"The appropriate dose of levothyroxine is that which restores euthyroidism and serum TSH to the lower part of the reference range - 0.2-0.5mU/l.
In this case, free thyroxine is likely to be in the upper part of its reference range or even slightly elevated – 18-22pmol/l.
Most patients will feel well in that circumstance. But some need a higher dose of levothyroxine to suppress serum TSH and then the serum-free T4 concentration will be elevated at around 24-28pmol/l.
This 'exogenous subclinical hyperthyroidism' is not dangerous as long as serum T3 is unequivocally normal – that is, serum total around T3 1.7nmol/l (reference range 1.0-2.2nmol/l)."
You can obtain a copy of the articles from Thyroid UK email print it and highlight question 6 to show your doctor please email Dionne at
It's not the FT4 the most important. It's the FT3. That is much too low. Levo (T4), converts into T3, but your FT4 is also too low. So, you need an increase in dose.
To increase FT4 and FT3 you need increase in Levothyroxine. Dose is increased in 25mcg steps and retesting after 6-8 weeks (or waiting longer, but not sooner)
Ask GP for 25mcg dose increase, as a "trial" if necessary
Going absolutely strictly gluten free diet is likely to help. Try for at least 3-6 months
Professor Toft recent article saying, T3 may be necessary for many otherwise we need high FT4 and suppressed TSH in order to have high enough FT3
First step is to get FT4 towards top of range after increase in dose, gluten free, then if FT3 remains low then looking at adding small dose of T3 may be necessary
Thyroid UK has list of recommended thyroid specialists.
Also as you have Hashimoto's are you on strictly gluten free diet?
Hashimoto's affects the gut and leads to low stomach acid and then low vitamin levels
Low vitamin levels affect Thyroid hormone working
Poor gut function can lead leaky gut (literally holes in gut wall) this can cause food intolerances. Most common by far is gluten.
According to Izabella Wentz the Thyroid Pharmacist approx 5% with Hashimoto's are coeliac, but over 80% find gluten free diet helps significantly. Either due to direct 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 slowly lower TPO antibodies
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