Re: A1C Conversion and vice versa

[Guest guest]

The 18:1 factor is used to convert the blood glucose (BG) reading from

glucometers between the

mg/dL (used in America) to mmol/L (used in Britain) and vice versa.

If your glucometer reading for BG is in mg/dL (miligrams per deciliter - as

used in USA and Germany, I think), divide that number by 18 to get the

equivalent result in mmol/L (millimoles per litre - as used in Canada,

Britain and Scandinavia). To go the other direction (from mmol/L to mg/dL),

multiply by 18. Some suggest using a factor of " 20 " (rather than 18) just

because it's easier to do quickly, in your head, without a calculator.

For instance, my BG reading (with a US glucometer) of 120 (in mg/dL) would

be equivalent to 6.7 (mmol/L) on a glucometer in the UK. The 18-factor

doesn't apply to HbA1c numbers. An A1c of 10 would be an average of about

240 mg/dL of BG.

Sandy

T1 -1979

Someone wrote:

>The " rough " conversion I was taught was 18 to 1. Meaning whatever the A1C

>number is you multiple that by 18 to get a " daily reading " (A1C= 10 roughly

>180bghgl)

>Or divide the " daily number " by 18 to get what would be the A1C reading of

>that specific test. A silly math game...