Imagine that your last hemoglobin A1c result was 5.9. Now it's time for a new test, and the results show that your A1c is 6.1. Does this mean your control has gotten a lot worse?
We have to remember that all these lab tests we get are subject to all kinds of errors. First, they're performed by human beings, and all human beings occasionally make mistakes.
When I was first diagnosed, my hemoglobin A1 (the old test that didn't break down into A1c) was 16. This was equivalent to an A1c of about 13. Obviously not good! I was put on metformin and given the standard dietary advice.
I drastically reduced my food intake, especially starches and sugars, went back for another test in several weeks, and then saw my doctor. He said my A1 hadn't changed. I told him that was impossible. "If it had gone from 16 to 14, I'd believe you, but it's impossible that it hasn't changed when I've changed my diet so much ( read more about dietary changes for diabetes here) . My fastings ...
Read David's first update from the Scientific Sessions here!
San Francisco -- Yesterday I was wearing Band-aids on six of my fingers. I had my A1C tested six times in one day with five different systems. I'm in San Francisco at what is probably the only place in the world
where I could have this bloody experience. It's the annual Scientific
Sessions of the American Diabetes Association. The consistency of the results of these six tests is good news for
people with diabetes. Each of these tests claim to be certified by the National Glycohemoglobin Standardization Program (NGSP) or comparable to it, and the closeness of the results confirm these claims. But my higher numbers from a year ago was bad news for me. At last
year's ADA in Chicago only three booths offered A1C tests. My results
varied from 4.6 with Bayer HealthCare's A1CNow+ to 5.1 with Siemens Healthcare Diagnostics' DCA 2000+ Anaylzer to 5.3 with the Bio-Rad in2it A1C Anaylzer . Those results for a person with typ...
I recently saw the following question:
My granddaughter’s HgbA1c was elevated to 10. Her glucose readings have been normal. Why does she have this elevated reading?
It seems obvious at first glance that either the elevated HgbA1c is wrong, or the glucose readings are misleading. I’ll assume that your granddaughter has a diagnosis of diabetes, and that the glucose readings you describe are being done by her with a home glucose meter, rather than being done in a commercial laboratory. You don’t describe her as being a child, teen, or adult, but the issues are mostly age-independent.
As you are aware, the glycosylated hemoglobin test (called by various acronyms including HgbA1c and A1C) has a normal range well below your granddaughter’s value of 10. In people without diabetes, the value is usually about 5; for people with diabetes, most endocrinologists would want to see the value below 7. So, based on her value of 10, one would assum...
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