From Carmel, California, USA:
A recent article in a national diabetes magazine stated that for hemoglobin A1c lab test results to be accurate, the sample must be put into a centrifuge within 30 minutes. I asked our local lab about this, and they stated that their protocol specified within four hours. If 30 minutes is optimal, and the reading would have been 7.0%, what would the readings show (using the same sample) at one hour, two hours, etc.? This is important to know because doctors use this as one measure of recommending certain treatments.
I think that there has been a misunderstanding here. When blood is taken for glucose assay in a clinical laboratory, the red cells are normally spun off as soon as possible, and glucose is then measured in the serum. Nowadays, hemoglobin A1c is measured, whether in a clinical laboratory or in a doctor's office, on a very small needle stick amount of whole blood. Even with the older chromatographic assays, whole blood was also employed.
Original posting 10 Nov 2000
Posted to Blood Tests and Insulin Injections
|Return to the Top of This Page|
Last Updated: (none)
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.
This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
© Children with Diabetes, Inc. 1995-2018. Comments and Feedback.