Re: Calculating Average level from A1C

[Guest guest]

Hmm, the equation I ended up finding to convert A1c to average mmol/L

reading was:

Average blood sugar = (HbA1c * 1.9777) - 4.2944

This gives different results to yours. Using my last A1c of 7.2 (yes, I know

that needs to be better, but it's down from 8.7 a year ago!) and my

equation, my average blood sugar would be 9.9. The average on my meter is

usually hovers between 8.5-9.5, but I'm pretty sure my blood sugar goes high

at least when I don't test (the lows I usually end up testing because I feel

them). Anyway, using your equation my average comes out as 8.4. The only

thing I can think of is maybe your equation is measuring in whole blood

results and mine is in plasma. When I multiply 8.4 by 1.2 to convert from

whole blood readings to plasma, the result comes out as 10.08, so I'm pretty

sure that's the difference. I think most newer meters use plasma readings,

I'm not sure how to tell which ones use which kinds of readings.

Ah, I think they like to have all these different measurements just to

confuse people!

Jen

Re: Some questions

>

>

>> Just one comment ... blood sugar measurements in mmol/L are not the same

> as

>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>> millimoles per litre, so even though they both cover a similar range of

>> numbers, they are not equivalent. You can say that glucose is stuck to

> 6.8%

>> of hemoglobin molecules, but that doesn't equal an average blood sugar of

>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

> blood

>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>> convert between A1c and average mmol/L blood sugar that I came across

> once,

>> but I can't remember it now. I'll see if I can find it to post. There are

>> also formulas to convert A1c measurements to the average mg/dl blood

> sugar.

>>

>> Jen

>

>

>

>

>

>

>

[Guest guest]

Ah, yes, I do believe this is the formula I recall as having seen some where

before. Thanks

Re: Some questions

>

>

>> Just one comment ... blood sugar measurements in mmol/L are not the same

> as

>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>> millimoles per litre, so even though they both cover a similar range of

>> numbers, they are not equivalent. You can say that glucose is stuck to

> 6.8%

>> of hemoglobin molecules, but that doesn't equal an average blood sugar of

>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

> blood

>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>> convert between A1c and average mmol/L blood sugar that I came across

> once,

>> but I can't remember it now. I'll see if I can find it to post. There are

>> also formulas to convert A1c measurements to the average mg/dl blood

> sugar.

>>

>> Jen

>

>

>

>

>

>

>

[Guest guest]

Yes, I am definitely confused. What is the main difference between plasma

and whole blood? When I prick my finger is that whole blood coming out or

plasma?

Re: Some questions

>>

>>

>>> Just one comment ... blood sugar measurements in mmol/L are not the same

>> as

>>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>>> millimoles per litre, so even though they both cover a similar range of

>>> numbers, they are not equivalent. You can say that glucose is stuck to

>> 6.8%

>>> of hemoglobin molecules, but that doesn't equal an average blood sugar

>>> of

>>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

>> blood

>>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>>> convert between A1c and average mmol/L blood sugar that I came across

>> once,

>>> but I can't remember it now. I'll see if I can find it to post. There

>>> are

>>> also formulas to convert A1c measurements to the average mg/dl blood

>> sugar.

>>>

>>> Jen

>>

>>

>>

>>

>>

>>

>>

[Guest guest]

Thanks, !

Calculating Average level from A1C

Hi all

Here is a way to work out what your average blood sugar level is from a1c

multiply your a1c by 2 then subtract 6 from it and for those

in the USA you would then need to multiply it by 18.

so for example your a1c is 6.5%

6.5 multiply by 2 = 13 then subtract 6 and your average blood sugar level

works out to

be 7, but since you do your readings different in the USA you would then

need to multiply it by 18 to get the average level, which would be 126.

from Down Under

Re: Some questions

> Just one comment ... blood sugar measurements in mmol/L are not the same

as

> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

> millimoles per litre, so even though they both cover a similar range of

> numbers, they are not equivalent. You can say that glucose is stuck to

6.8%

> of hemoglobin molecules, but that doesn't equal an average blood sugar of

> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

blood

> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

> convert between A1c and average mmol/L blood sugar that I came across

once,

> but I can't remember it now. I'll see if I can find it to post. There are

> also formulas to convert A1c measurements to the average mg/dl blood

sugar.

>

> Jen

[Guest guest]

It is whole blood, but the plasma is the clear part of blood after it is

separated. Whole blood contains the red blood cells, while plasma does not

have the red blood cells in it-or the white cells either, for that matter.

The machines that use plasma are able to separate the cells out and use

only the plasma part of the blood.

Re: Calculating Average level from A1C

Yes, I am definitely confused. What is the main difference between plasma

and whole blood? When I prick my finger is that whole blood coming out or

plasma?

Re: Some questions

>>

>>

>>> Just one comment ... blood sugar measurements in mmol/L are not the same

>> as

>>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>>> millimoles per litre, so even though they both cover a similar range of

>>> numbers, they are not equivalent. You can say that glucose is stuck to

>> 6.8%

>>> of hemoglobin molecules, but that doesn't equal an average blood sugar

>>> of

>>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

>> blood

>>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>>> convert between A1c and average mmol/L blood sugar that I came across

>> once,

>>> but I can't remember it now. I'll see if I can find it to post. There

>>> are

>>> also formulas to convert A1c measurements to the average mg/dl blood

>> sugar.

>>>

>>> Jen

>>

>>

>>

>>

>>

>>

>>

[Guest guest]

It is whole blood, but the plasma is the clear part of blood after it is

separated. Whole blood contains the red blood cells, while plasma does not

have the red blood cells in it-or the white cells either, for that matter.

The machines that use plasma are able to separate the cells out and use

only the plasma part of the blood.

Re: Calculating Average level from A1C

Yes, I am definitely confused. What is the main difference between plasma

and whole blood? When I prick my finger is that whole blood coming out or

plasma?

Re: Some questions

>>

>>

>>> Just one comment ... blood sugar measurements in mmol/L are not the same

>> as

>>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>>> millimoles per litre, so even though they both cover a similar range of

>>> numbers, they are not equivalent. You can say that glucose is stuck to

>> 6.8%

>>> of hemoglobin molecules, but that doesn't equal an average blood sugar

>>> of

>>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

>> blood

>>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>>> convert between A1c and average mmol/L blood sugar that I came across

>> once,

>>> but I can't remember it now. I'll see if I can find it to post. There

>>> are

>>> also formulas to convert A1c measurements to the average mg/dl blood

>> sugar.

>>>

>>> Jen

>>

>>

>>

>>

>>

>>

>>

[Guest guest]

It is whole blood, but the plasma is the clear part of blood after it is

separated. Whole blood contains the red blood cells, while plasma does not

have the red blood cells in it-or the white cells either, for that matter.

The machines that use plasma are able to separate the cells out and use

only the plasma part of the blood.

Re: Calculating Average level from A1C

Yes, I am definitely confused. What is the main difference between plasma

and whole blood? When I prick my finger is that whole blood coming out or

plasma?

Re: Some questions

>>

>>

>>> Just one comment ... blood sugar measurements in mmol/L are not the same

>> as

>>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>>> millimoles per litre, so even though they both cover a similar range of

>>> numbers, they are not equivalent. You can say that glucose is stuck to

>> 6.8%

>>> of hemoglobin molecules, but that doesn't equal an average blood sugar

>>> of

>>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

>> blood

>>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>>> convert between A1c and average mmol/L blood sugar that I came across

>> once,

>>> but I can't remember it now. I'll see if I can find it to post. There

>>> are

>>> also formulas to convert A1c measurements to the average mg/dl blood

>> sugar.

>>>

>>> Jen

>>

>>

>>

>>

>>

>>

>>

[Guest guest]

A lab usually measures plasma. Home meters usually measure whole blood as

they don't include things like centrifuges (grin) but most meters these days

are designed to show you plasma readings which are numerically greater than

those of whole blood.

Mike

Re: Some questions

>>>

>>>

>>>> Just one comment ... blood sugar measurements in mmol/L are not the

>>>> same

>>> as

>>>> A1c measurements. An A1c is measured as a percentage, whereas mmol/L is

>>>> millimoles per litre, so even though they both cover a similar range of

>>>> numbers, they are not equivalent. You can say that glucose is stuck to

>>> 6.8%

>>>> of hemoglobin molecules, but that doesn't equal an average blood sugar

>>>> of

>>>> 6.8 mmol/L or 122 mg/dl. An A1c of 5.5 is not equivalent to an average

>>> blood

>>>> sugar of 5.5 mmol/L or 99 mg/dl. There's a formula that can be used to

>>>> convert between A1c and average mmol/L blood sugar that I came across

>>> once,

>>>> but I can't remember it now. I'll see if I can find it to post. There

>>>> are

>>>> also formulas to convert A1c measurements to the average mg/dl blood

>>> sugar.

>>>>

>>>> Jen

>>>

>>>

>>>

>>>

>>>

>>>

>>>