My endocrinologist said stop thyroxine, I was on 75mcg daily, she wanted to see my results off it. My T4 has not changed much at all on it
Tsh has reduced from 36 to 8 but T4 remains around 16 with or without treatment. She did a separate assay?? No interference was seen and she suggests Addenbrooks for thyroid resistance or adenoma??? I have been off thyroxine for 3 weeks and am tearful, skin is very dry, eyes so dry, freezing cold, episodes of tachycardia... I did bloods yesterday after 3 weeks will they show enough as she wanted me off for 6 weeks but I'm feeling worse daily.. any advice pls
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richard123
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What a sadist! So you were taking 75mcg T4 and your TSH was still well over range and your doctor said to stop taking levo instead of giving you an increase. Blimey! yes it could be a TSH-producing adenoma, but a free T4 of 16 is not high is most ranges (barely mid-range in the most common ones) and you don't give a free T3 result so that could be rock bottom. Do you take B vitamins (as biotin can give a false free t4 reading if taken within a week of the test)? Your symptoms now suggest severe hypothyroidism. I'd see another doctor and get your levo back ASAP before you become really ill. You'd think that your doctor could just look at your results from before you started levo!
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
tukadmin@thyroiduk.org
Also request list of recommended thyroid specialists. Yours sounds like a Diabetes specialist
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
Thank you, The issue I have is awful tachycardia and what endo described as pt presents with symptoms of thyrotoxicosis on any dose above 75mcg I'm not even great on that. Nervous anxious sped up I was ok on 50mcg but Tsh kept rising on that in 75 my Tsh stays around 8 !!! I feel at such a loss
Medichecks Thyroid plus ultra vitamin or Blue Horizon Thyroid plus eleven are the most popular choice. DIY finger prick test or option to pay extra for private blood draw. Both companies often have money off offers.
All thyroid tests should ideally be done as early as possible in morning and fasting and don't take Levo 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)
Agree with AotN's comment above, please see another doctor as soon as possible. 75 mcg of levo is a low dose, and one which cannot possibly indicate resistance to thyroid hormone. For that, you would need to have titrated up to a much higher dose of T4, found that ineffective, and then started the same process of careful titration on T3 monotherapy. Resistance syndromes require very high doses of T3, often well over 100 mcg.
If you found yourself only experiencing a degree of recovery with that level of T3 dose, then certainly, a referral to Addenbrooke's would be worthwhile. Even so, not all cases of resistance to TH can be picked up by the specialised genetic testing they do there.
A fast heart beat can be a sign of low T3 (the active thyroid hormone). It may be that your body is unable to convert levo to sufficient T3 - did the doctor do an FT3 test?
My hypothyroid other half’s rapid heart rate only started to slow when she was prescribed liothyronine.
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Bloods back- they are reducing my thyroxine! 
TSH increased on Thyroxine! 
Update on Bloods results
Chronic Fatigue verses Thyroid problems = being taken of Thyroxine and being put on Erfa.
Increasing thyroxine 
