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HbA1c units changing 1 Oct

HbA1c units changing 1 Oct

Hi all, on 1 October 2011, the units for measuring HbA1c numbers are set to change from the % value that a lot of us are used to to mmol/mol.

As an example - an HbA1c value of 6.5% is 48 mmol/mol in the new measurement.

The conversion is a bit complicated for most of us so we've got a calculator that will do the conversion work for you.

Use the conversion calculator here
http://www.diabetes.co.uk/hba1c-units-converter.html
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People with type 2 deserve the chance to test their blood glucose levels.

benedict

Posts: 538
Joined: September 29th, 2010, 10:16 am
Location: Coventry

Re: HbA1c units changing 1 Oct

Thank you Benedict.

Is there any chance you could increase the precision level of the calculator?

When coverting from mmol/mol to % (as many of us will have to when we get our HbA1c results) I get the following:
37 mmol/mol = 5%
38 mmol/mol = 6%
39 mmol/mol = 6%
40 mmol/mol = 6%
41 mmol/mol = 6%
42 mmol/mol = 6%
43 mmol/mol = 6%
44 mmol/mol = 6%
45 mmol/mol = 6%
46 mmol/mol = 6%
47 mmol/mol = 6%
48 mmol/mol = 7%

There is a big difference between 47 mmol/mol and 38 mmol/mol but according to this calculator they are all worth a 6% in old money.

I'm not being deliberately predantic, but since many of us fight for every 0.1% reduction in HbA1c, this makes a confusing change even more confusing.

borofergie

Posts: 2989
Joined: April 2nd, 2011, 1:05 pm
Location: North London (home), West London (work)

Re: HbA1c units changing 1 Oct

Oh cripes, that's no good at all. Thanks borofergie.

Give us a day or two and this should be fixed.
I'm part of the forum support team at Diabetes.co.uk - I'll be around to help out on the forum. If you need support, please feel free to contact me.

People with type 2 deserve the chance to test their blood glucose levels.

benedict

Posts: 538
Joined: September 29th, 2010, 10:16 am
Location: Coventry

Re: HbA1c units changing 1 Oct

Hi guys - glad to say it's fixed - giving results to 4 decimal places.

Posts: 784
Joined: April 4th, 2008, 10:47 am

Re: HbA1c units changing 1 Oct

Administrator wrote:Hi guys - glad to say it's fixed - giving results to 4 decimal places.

I just noticed. Thanks Benedict! It's too accurate now

borofergie

Posts: 2989
Joined: April 2nd, 2011, 1:05 pm
Location: North London (home), West London (work)

Re: HbA1c units changing 1 Oct

Dont know why anyone would want to know to one ten thousandth (4 decimal places)!

I noticed that each increase or decrease (0.1%) on the HBA1c scale is worth (with rounding) 1.1 points on the new scale.

6.0 = 42
6.1 = 43.1
6.2 = 44.2

and so on.

Yeah, I know that this theory is going to lose a decimal point somewhere eventually but it comes back again on the next number. hey ho!
johnny37

Posts: 40
Joined: January 27th, 2010, 1:59 pm

Re: HbA1c units changing 1 Oct

The question I would ask is this: why?

They've always got to fiddle around and tinker, haven't they. Managing the condition is hard enough without the medical profession making it more complicated.
ursus262

Re: HbA1c units changing 1 Oct

Bet we all convert back to % and report on here in that number for ages to come!
Type 2, diagnosed Nov 2010. HbA1c then 8.2%. Mar 2011, HbA1c 5.9%.Dec. 2011 5.9%. May 2012 5.7%

150-180grams carbs per day + exercise (mainly golf!). 2x500mg Metformin SR per day.
Support testing for T2s

Grazer

Posts: 3135
Joined: January 7th, 2011, 1:32 pm

Re: HbA1c units changing 1 Oct

I'll always ask for it in %, after 30 years I'm not going to change
“After a good dinner one can forgive anybody, even one's own relations.”

Oscar Wilde

Posts: 8402
Joined: August 22nd, 2008, 4:21 pm

Re: HbA1c units changing 1 Oct

Forget HbA1c value as a %
Accept the new mmol value.

Benefits: mmol will allow you to detect smaller ups and downs that would not show up in the % value.
PHARMANCO

Posts: 2
Joined: October 24th, 2012, 2:26 pm

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