HbA1c results

[Old Holborn]

8.6% or 70 mmol/mol.

Help with the maths please, how do I change mmol/mol to mmol/L, is it divide by 10 ? 😱

 

[Northerner]

8.6% or 70 mmol/mol.

Help with the maths please, how do I change mmol/mol to mmol/L, is it divide by 10 ? 😱

How does that compare with your previous results? Have they given you any advice or medication to help bring it lower? I'm afraid it's not so simple as a multiplication or a division of values to convert, this is the formula:

IFCC-HbA1c (mmol/mol) = [DCCT-HbA1c (%) - 2.15] ? 10.929 😱

I'm sure someone far better at maths than me can change the formula around so it calculates the values either way around 🙂

 

[trophywench]

I use

http://www.diabetes.org.uk/Professi...-and-resources/Tools/Changes-to-HbA1c-values/

for 'rough' values

 

[Northerner]

I suppose that, looking at the formula, a rough way of estimating would be to divide the mmol/mol value by 11 and add 2.15 🙂 Thus:

70/11= 6.36 + 2.15 = 8.51%

 

[Old Holborn]

8.6% or 70 mmol/mol.

Help with the maths please, how do I change mmol/mol to mmol/L, is it divide by 10 ? 😱

Sorry I didn't make it clear in my last post. It's not HbA1c to mmol/mol I'm trying to convert it's mmol/mol to mmol/L. (To match my meter readings).

Last test was 8.7%.

My DSN took a sicky on my appointment day, saw Paediatric nurse who gave me the reading and checked my sore big toe's on both feet. Now waiting on an appointment with the chiropodist. At least I wasn't preggers !!! 🙂

 

[Mark T]

Sorry I didn't make it clear in my last post. It's not HbA1c to mmol/mol I'm trying to convert it's mmol/mol to mmol/L. (To match my meter readings).

Last test was 8.7%.

My DSN took a sicky on my appointment day, saw Paediatric nurse who gave me the reading and checked my sore big toe's on both feet. Now waiting on an appointment with the chiropodist. At least I wasn't preggers !!! 🙂

Do you mean something like this? http://www.diabeteschart.org/intlbgchart.html

Although the values are not exactly equivalent since the meter value and the HbA1c are measuring slightly different things.

 

[Old Holborn]

Going by http://www.diabeteschart.org/intlbgchart.html I'll have to get the Nurse to check her conversion tables. She told me it was 9 mmol/L, so I wasn't overly worried but this has made me sit up and take note.

 

[Northerner]

Please forget HbA1c.

It's mmol/mol to mmol/L I'm trying to find. My meter readings are given as mmol/L not mmol/mol.

There is no direct relationship between the two so it's not a meaningful conversion. A meter measures a snapshot of your BG levels in either mmol/l (UK/Canada) or mg/dl(US/France etc.). An average BG reading over a large number of snapshots might give you an indication of what your HbA1c will be, but the units are different because they are measuring different things.

 

[Old Holborn]

Northerner please see my post above yours.

Had a chat with swmbo, she said she noted the nurse was converting using 2 sets of tables. The nurse came up with 8.6% = 9.0 mmol/L. Hopefully will see the DSN on my next appointment in April.

 

[Northerner]

Northerner please see my post above yours.

Had a chat with swmbo, she said she noted the nurse was converting using 2 sets of tables. The nurse came up with 8.6% = 9.0 mmol/L. Hopefully will see the DSN on my next appointment in April.

I wonder if the mmol/l was the Estimated Average Glucose? There's a table here that shows conversion from mmol/mol to mmol/l:

http://www.diabeteschart.org/hba1cmol.html

 

[Old Holborn]

I wonder if the mmol/l was the Estimated Average Glucose? There's a table here that shows conversion from mmol/mol to mmol/l:

http://www.diabeteschart.org/hba1cmol.html

Thanks me old China ! 🙂

When my Black ink printer cartridge arrives I will send a printout to the DSN. (Hopefully she already has a copy).

 

[Northerner]

According to the tables on that site though, an HbA1c of 8.6% = Est.BG of 11 mmol/l, not 9

 

[GlucoseGary]

Thanks for that link, Northerner, it's handy not to have to do multiple conversions in future.

I had been using this BG estimator which for 8.6% (in old money) gives an average BG of 11.1, about the same as Northerner's chart - but I have found that other sites give quite different estimates.

 

[Northerner]

This site explains the Estimated Glucose average and HbA1c and how they are used:

http://labtestsonline.org/understanding/analytes/a1c/tab/test

 

[Blythespirit]

I've always used the conversion chart in the back of a DUK book I bought when first diagnosed. Unfortunately I lent the book to a friends hubby who had just been diagnosed a few months ago and he's not returned it yet.( Not holding my breath on past experience) I can remember that 12 converted to an average of about 19 and that my 6.3 worked out at somewhere in the region of 9....so based on that it looks like 11.1 is about right. XXXXX