formula for hba1c

Scott said:

Hi All:

I have found discrepencies on some web pages about the formula for HBa1C and what each value
translates to, could someone tell me which is correct.

One site says that when HbA1C is 7.1 that translates to the average blood sugar being around 140.
However, another site says that if the HbA1C is 7.0 that BG is 170.

Which one is correct?

Thanks! Scott

In my opinion both are probably right for some people. There is only a rough correlation between
average blood glucose and A1c. There have been extensive discussions here about how best to
correlate the two but there are several problems, most important is that everyone's body is
different. Others include the quality of the blood glucose data and the testing method used to
determine the A1c. Perhaps if someone finally comes out with an accurate continuous blood glucose
monitoring system, capable of operating for weeks at a time it may be possible to get a better
correlation.

--
K'neH'a'Iw

Uncloaking, Shields up.

Scott - check threads in this ng. Hba1c measures the sugar sticking to red blood cells, I believe -
and may have more to do with peaks in BG than avg BG.

[email hidden] (Scott) wrote in message
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Quoted message said:

Hi All:

I have found discrepencies on some web pages about the formula for HBa1C and what each value
translates to, could someone tell me which is correct.

One site says that when HbA1C is 7.1 that translates to the average blood sugar being around 140.
However, another site says that if the HbA1C is 7.0 that BG is 170.

Which one is correct?

Thanks! Scott

Scott wrote in message ...

Quoted message said:

Hi All:

I have found discrepencies on some web pages about the formula for HBa1C and what each value
translates to, could someone tell me which is correct.

One site says that when HbA1C is 7.1 that translates to the average blood sugar being around 140.
However, another site says that if the HbA1C is 7.0 that BG is 170.

Which one is correct?

Thanks! Scott

The latest correlation (and presumably the best since it is based on more test subjects) favors
the 170 value, i.e.

bG = 35.6 x HbA1c - 77.3

or, for HbA1c of 7.1

bG = 35.6 x 7.1 - 77.3 = 175 mg/dL

see

care.diabetesjournals.org275Open ↗

for the article.

However, R-squared is only 0.67 which is "not too hot" which you can see in the scatter in the
graphs which plot the actual data.

Regards
Old Al

I’ve got a “home-cooked” formula that works for me.......... I take a reading at the *same
time* every day(when I wake up).........then average them for the previous 90 days and divide the
result by 20.2 I’ve used this for a year, had 4 blood workups and was right on the head with 3 of
the lab results, missed by 0.1 on the 4th........... YMMV..........

(Scott) said:

Hi All:

I have found discrepencies on some web pages about the formula for HBa1C and what each value
translates to, could someone tell me which is correct.

One site says that when HbA1C is 7.1 that translates to the average blood sugar being around 140.
However, another site says that if the HbA1C is 7.0 that BG is 170.

Which one is correct?

Thanks! Scott

I just looked at my approximation chart, and found 7.1 to to go with 175, however, if I looked at it
the wrong way, by looking at the A1c number and looking above it on the chart for my result, as
opposed to looking below it, on the chart, which is the correct way to read it, I would have thought
the number was 140.

Sleepy

=================================================
There are 10 kinds of people in the world: Those who understand binary, and those who don't.
=================================================

damn Al, you just had to go depress me even more.. eh? here i thought i was doing semi ok with my
a1c at 7.8 yeah had lots going on.. didn't bother with control. i'm one foot in the grave and the
other on a banana peel.

my meter didn't lie then, my 30day avg was 194.. a1c of 7.8 comes to 200.39

that's a one touch ultra.
--
RK - t1 In tribute to the United States of America and the State of Israel, two bastions of strength
in a world filled with strife and terrorism.

"oldal4865" <[email hidden]> wrote in message -"]news:[email hidden]-
berlin.de...

Quoted message said:

Scott wrote in message ...

Quoted message said:

Hi All:

I have found discrepencies on some web pages about the formula for HBa1C and what each value
translates to, could someone tell me which is correct.

One site says that when HbA1C is 7.1 that translates to the average blood sugar being around 140.
However, another site says that if the HbA1C is 7.0 that BG is 170.

Which one is correct?

Thanks! Scott

The latest correlation (and presumably the best since it is based on

more

Quoted message said:

test subjects) favors the 170 value, i.e.

bG = 35.6 x HbA1c - 77.3

or, for HbA1c of 7.1

bG = 35.6 x 7.1 - 77.3 = 175 mg/dL

see

care.diabetesjournals.org275Open ↗

for the article.

However, R-squared is only 0.67 which is "not too hot" which you can see

in

Quoted message said:

the scatter in the graphs which plot the actual data.

Regards
Old Al