A little bit about Hemoglobin A1C: This is a helpful screening test for pre-diabetes as well as the tool of choice for monitoring glucose control in diagnosed diabetics. It's not standard of care everywhere to use it as a diagnostic lab for Pre-DM, but is being adopted increasingly as such and is recommended by the ADA. The reason it catches pre-diabetes earlier than a fasting glucose is because typically the blood sugar will be abnormally elevated after a meal (either higher than should be or high for too long) before the fasting sugar is affected in the course of insulin resistance. The glucose tolerance test will also catch these, but it is a one-time shot versus an average of 3-4 months.
5.6% and below: normal glucose metabolism
5.7-6.4% Pre-Diabetes. 15-30% of people with Pre-DM will develop diabetes within 5 years without lifestyle change.
6.5% and above: Diabetes
- 11/24/2012 9:26:00 AM