What is HbA1c?
By Rick Mendosa
The hemoglobin A1c test is a simple lab test that shows the average amount
of sugar in your blood over the last two to three months. It’s the best
way to find out if your blood sugar is under control. All people with type
2 diabetes should have a hemoglobin A1c test at least twice a year. If
your treatment changes or if your blood sugar level stays too high, you
should get a hemoglobin A1c test at least every three months until your
blood sugar level improves. Regular testing will help you and your doctor
to track your blood sugar levels over time and plan long-term treatment
options to reach your target level of control.
What is the hemoglobin A1c test?
The hemoglobin A1c test (also called H-b-A-one-c) is a simple lab test
that shows the average amount of sugar (also called glucose) that has been
in a person's blood over the last 3 months. The hemoglobin A1c test shows
if a person's blood sugar is close to normal or too high. It is the best
test for a health care provider to tell if a person's blood sugar is under
control.
How does the hemoglobin A1c relate to readings
from self-monitoring of blood glucose?
People with high daily blood sugar readings most of the time will usually
have a high hemoglobin A1c test result. To maintain a hemoglobin A1c level
less than 7 percent means that the blood sugar should rarely go above 150
mg/dl on any self-monitoring blood glucose test performed before meals
during the previous 3 months. The blood sugar also should not drop below
60-70 mg/dl, or low blood sugar occurs.
about hemoglobin A1c table , Hemoglobin A1c Testing , HbA1c test
HbA1c
Mean Blood Glucose (mg/dL)
Average Plasma Glucose
(mg/dL)
Interpretation
4
61
65
Non-Diabetic Range
5
92
100
6
124
135
7
156
170
Target for Diabetes in
Control
8
188
205
Action Suggested according
ADA guidelines
9
219
240
10
251
275
11
283
310
12
314
345
A1C, also known as glycated hemoglobin or glycosylated
hemoglobin, indicates a patient's blood sugar control over the last 2-3
months. A1C is formed when glucose in the blood binds irreversibly to
hemoglobin to form a stable glycated hemoglobin complex. Since the normal
life span of red blood cells is 90-120 days
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