What is Hemoglobin A1c?
Hemoglobin A1c, also known as glycated hemoglobin, is a test used to determine how well treatment for diabetes is working over a minimum of a six-week period. The test gives a result that shows an average blood glucose level for the previous six to 12 weeks. While daily testing is considered a good means of controlling diabetes, not all diabetics test regularly or take medications/dietary changes as prescribed. The Hemoglobin A1c test gives doctors an inside look at overall control and efficacy of medical treatment.
Normal Value Range
- Negative Pregnancy Adult: 4 to 6 percent or 0.04 to 0.06 PTH*
- Pregnancy Trimester One: 4 to 6 percent or 0.04 to 0.06 PTH*
- Pregnancy Trimester Two: 4 to 6 percent or 0.04 to 0.06 PTH*
- Pregnancy Trimester Three: 4 to 7 percent or 0.04 to 0.07 PTH*
*Proportion of Total Hemoglobin
If A1c is at 6.5 percent or higher, diabetes is likely.