Thyroid UK
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Overactive thyroid

I would be very grateful for any advice on where to start to get tests to check my T3 levels my TSH level is 00.01 as was taking 200 mg levothyroxine for a year or so the doctors would say all normal which is I know it isn't I'm finding it all so frustrating, I reduced to 150 mg levothyroxine but I'm still not feeling how I should be, I need to get my levels right I want feel well again and I've no faith in my GP anymore if anyone has some good advice on where to start I'd be grateful


2 Replies

I use Blue Horizon to get my T3 checked. Even though it was written on every blood form the endo gave me it was never ever tested so in the end rather than have a load of hassle I just had it tested myself using the BH home fingerprick test. TUK members get a 10% discount.

You could always try to find a doctor / endo who is more helpful. I hate it when someone says your results are all normal / fine / good / ok. All I want to see is the result and the lab ranges.


Welcome to the forum, CarolineB.

You can order private thyroid tests from Blue Horizon and Genova via It would be useful to have TSH, FT4 and FT3.

Post your results with the lab ref ranges (the figures in brackets after your results) in a new question and members will advise.

I was very unwell on Levothyroxine after thyroidectomy and felt poisoned. 200mcg suppressed my TSH but my FT4 was very high >34 for months. When dose was reduced to 125mcg FT3 dropped below range. By trial and error I worked out that I couldn't tolerate Levothyroxine alone. Adding T3 improved my low FT3 but more importantly calmed the adverse effects Levothyroxine caused and I've been doing well on combined Levothyroxine and T3 for over a year.


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