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Re: [IP] Re: H1c test Question
> Michael, is this the one you're referring to?
> The source for the following info came from this site:
> http://www.faqs.org/ (search for A1C)
No, these recommendations are based on the study I read.
Unfortunately finding a particular study is like searching for a
needle in a haystack. A search on hbA1c will probably turn it up but
a hundred or more others as well and all have to be looked at to find
the right one. :-(
It's there, just don't particularly want to do the research when I
know the information is valid.
> ...(Henrik) Mortensen's work shows that after a change
> in average bG level, the HbA1c level restabilizes after
> about 4 weeks. This has several consequences.
> Clinically, the most important are these:
> First, the HbA1c is an exponentially weighted average
> of blood glucose levels from the preceding 4 weeks,
> with the most recent 2 weeks being by far the most
> Second, measuring HbA1c less often than monthly results
> in unmonitored gaps between measurements. To use HbA1c
> as a continuous monitoring tool, you need to check it
> at least once a month.
> Third, it is worthwhile checking the HbA1c of newly
> diagnosed patients as often as once a week to determine
> the effectiveness of the newly imposed treatment.
> Reference 1: American Diabetes Association, Tests of
> Glycemia in Diabetes, Diabetes Care 23:S80-S82, January
> 2000 Supplement 1.
> Available on the web at
> ment100/s80.htm. or check the home page at http://diabetes.org and
> follow the link to "Clinical Practice Recommendations".
> Reference 2: Kilpatrick ES, Maylor PW, Keevil BG:
> Biological Variation of Glycated Hemoglobin. Diabetes
> Care 21:261-264, February 1998.
> Available on the web at
> Reference 3: Mortensen HB, Christophersen C:
> Glucosylation of human haemoglobin a in red blood cells
> studied in vitro. Kinetics of the formation and
> dissociation of haemoglobin A1c. Clinica Chimica Acta
> 134:317-326, 15 November 1983.
> Reference 4: Mortensen HB, Volund A, Christophersen C:
> Glucosylation of human haemoglobin A. Dynamic variation
> in HbA1c described by a biokinetic model. Clinica
> Chimica Acta 136:75-81, 16 January 1984.
> Reference 5: Mortensen HB, Volund A: Application of a
> biokinetic model for prediction and assessment of
> glycated haemoglobins in diabetic patients.
> Scandinavian Journal of Clinical and Laboratory
> Investigation 48:595-602, October 1988.
> Take care, Kerri
> ~*~this is where my quote would be if I had one~*~
> Michael said:
> Actually they done some research that seems to show
> that when the doc does the A1c's on a regular basis,
> the patients tend to have lower values. The
> anticipation of having your performance reviewed
> creates a stimulus for better control. Really, honest,
> etc.... there is a paper on it somewhere buried in the
> bowels of Medline.
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