Mind and Body tired: for the past year I have... - Thyroid UK

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Mind and Body tired

JoanneUk profile image

for the past year I have been extra tried. my mind and body just cant do such. But then I cant sleep my doctors say my results are fine.

Test result FREE T4+FT3+TSH Report, Satisfactory, No Further Action

Serum free T4 level 16.4 pmol/L [10 - 20]

Serum TSH level 0.25 miu/L [0.5 - 4.4]

Serum free triiodothyronine level 3.5 pmol/L [3.5 - 6.5]

2 Replies
SeasideSusie profile image


Serum free triiodothyronine level 3.5 pmol/L [3.5 - 6.5]

That's your problem.

Your TSH is good, your FT4 is 64% through it's range, your FT3 is at the very bottom of the range. You aren't converting T4 to T3 and it's low T3 that is causing symptoms.

Ideally you need T3 adding to your Levo. Very hard to get on the NHS now but worth asking your GP for a referral to an endo.

Email Dionne at Thyroid UK for the list of thyroid friendly endos


then ask on the forum for feedback by private message on any you can get to. Before making an appointment (especially if considering going private) ask his secretary if he is open to prescribing T3.

Dr Toft, leading endocrinologist and past president of the British Thyroid Association, has recently written a new article which says that T3 may be helpful for many patients


SlowDragon profile image

Are you on Levothyroxine?

If so how much?

Are you diagnosed as having autoimmune thyroid disease (Hashimoto's)

For full Thyroid evaluation you need TSH, FT4 and FT3 plus both TPO and TG thyroid antibodies tested. Also extremely important to test vitamin D, folate, ferritin and B12

Low vitamin levels are extremely common, especially if Thyroid antibodies are raised

Low vitamins make conversion of FT4 to FT3 worse

High antibodies also affect conversion of FT4 to FT3

All thyroid blood tests should ideally be done as early as possible in morning and fasting. Do not take Levothyroxine dose in the 24 hours prior to test, delay and take immediately after blood draw. This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip, best not mentioned to GP or phlebotomist)

Private tests are available. Thousands on here forced to do this as NHS often refuses to test FT3 or antibodies or vitamins


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 special offers, Medichecks usually have offers on Thursdays, Blue Horizon its more random

If antibodies are high this is Hashimoto's, (also known by medics here in UK more commonly as autoimmune thyroid disease).

About 90% of all hypothyroidism in Uk is due to Hashimoto's.

Low vitamins are especially common with Hashimoto's. Food intolerances are very common too, especially gluten. So it's important to get TPO and TG thyroid antibodies tested at least once .

Link about thyroid blood tests


Link about antibodies and Hashimoto's



List of hypothyroid symptoms


If you have Hashimoto's strictly gluten free diet can also help,

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