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Thyroid UK
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Feeling tired all the time

Hi all, I'm new here.

I've had autoimmune thyroiditis for 12 years now. I take 150 of Levothyroxine daily.

I've never really paid any attention to this condition. But I've just asked my doctor to print off my last test results (Jan this year) as I feel tired a lot of the time and suddenly it occurred to me it could be thyroid connected.

It says Serum TSH level is 0.89 mU/L.

If there's anyone out there with more knowledge than me who could tell me if this is pretty normal, I'd be very grateful.

Many thanks.....

2 Replies

It's 'normal', but meaningless. Just the TSH on its own doesn't tell you anything much. Especially if you're on thyroid hormone replacement - which, of course, you are. If all your doctor is testing is the TSH, he doesn't know much about thyroid.

What you need are :




TPO antibodies

Tg antibodies

vit D

vit B12



Give the doctor this list and tell him this is what you want. Very doubtful he'd do them all. Equally doubtful he'd understand all the results. But, get what you can on the NHS, and then you could get what's left tested privately. If you are very tired, you are probably under-medicated. And, being under-medicated can cause all sorts of other problems, which is why the list is long.

When you have all those results, post them on here, with the ranges, and people will be better able to help you. :)


If you can't get full thyroid and vitamin testing from GP


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. DIY finger prick test or option to pay extra for private blood draw or

Both companies often have money off offers

All thyroid tests should 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 and most consistent results

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