HbA1c: What would be considered a good result for... - Thyroid UK

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HbA1c

Shanghai-Suki profile image
12 Replies

What would be considered a good result for the HbA1c test for someone on 100mcg Levothyroxine with hypothyroidism? Thanks in advance x

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Shanghai-Suki profile image
Shanghai-Suki
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SeasideSusie profile image
SeasideSusieRemembering

Normal for anyone is below 42mmol/mol or <6%

Pre-diabetes is 42-47 or 6 - 6.4%

What is your level?

Shanghai-Suki profile image
Shanghai-Suki in reply toSeasideSusie

My last reading was 4.4 Does having hypothyroidism affect this level?

SeasideSusie profile image
SeasideSusieRemembering in reply toShanghai-Suki

So that's very good then isn't it.

bookish profile image
bookish in reply toSeasideSusie

I'm afraid not necessarily academic.oup.com/labmed/art...

bookish profile image
bookish in reply toShanghai-Suki

Hypothyroidism and blood sugar control do have some links. HbA1c is only an average of usually 3 months and is also dependent on the lifetime of your red blood cells so can be affected by other conditions/deficiencies. As it is an average it can mask having quite significant peaks and troughs. It doesn't show everything about blood sugar control and it can be too low. Personally I would suggest getting yourself a blood glucose monitor and checking for yourself. 4.4 might indicate that you are perhaps regularly lower than you should be. (diabetes.co.uk/diabetes_car... I just bought a Tee2 and am very happy with it so far). Best of luck

in reply tobookish

Is there a way to convert a figure to a number? That article only give the percentage and my result was 34 which feels very low but I can't put it into context without a percentage!

bookish profile image
bookish in reply to

Hi, yes they have changed the measurements from percentages to mmol/mol diabetes.co.uk/hba1c-units-... . 34 comes out at 5.3% which is not too bad - above the 'low' of 5.0 anyway. But it still only gives you a guideline. A monitor might be useful.

in reply tobookish

Thank you! :D

JoannePA profile image
JoannePA

That looks like a great figure and as far as I am aware hypothyroidism has no impact on whether you will become diabetic

bookish profile image
bookish in reply toJoannePA

There is a chapter in Datis Kharrazian's book on the thyroid solely about the need to regain and maintain good blood sugar control. There is a lot of it, so 'll just quote a bit from the summary - "supporting hypothyroidism is futile if your blood sugar is too low or too high. This is called dysglycemia, a stepping-stone to diabetes". He says that hypothyroidism skews the basics of blood sugar metabolism affecting absorption of glucose into cells, so you can experience symptoms of hypoglycemia (even with normal bloods).

Prof Roy Taylor talks of the 'long silent scream' (which can be 10+ years) from the liver as it heads towards diabetes. So I think perhaps it is worth ensuring that it is not an issue for us all personally, especially given that poor blood sugar control is implicated in brain dysfunction, neuropathies, Alzheimer's etc.

in reply toJoannePA

In my preliminary research dive I've found this, in case you're interested! :D (labs.selfdecode.com/blog/hi...

Shanghai-Suki profile image
Shanghai-Suki

Thanks everyone for the response, a lot of really interesting comments! Think I will buy myself a monitor just to try & keep a regular eye on the levels, rather than rely on a 3 monthly average! Again many thanks x

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