Good glycemic control will promote health, prevent complications, raise quality of life and prolong life-span.
Glycated hemoglobin (HbA1c) reflects the glycemic control from the past 3 months. When there are more blood glucoses, glycation increases, making the value of HbA1c higher. Higher HbA1c means poorer glycemic control, which is easier to incur complications.
Correlation table for glycated hemoglobin (HbA1c) levels and the mean for plasma glucose levels
|
Glycated hemoglobin |
Mean plasma glucose |
|
HbA1c (%) |
mmol/L |
mg/dL |
|
5 |
5.5 |
100 |
|
6 |
7.5 |
135 |
|
7 |
9.5 |
170 |
|
8 |
11.5 |
205 |
|
9 |
13.5 |
240 |
|
10 |
15.5 |
275 |
|
11 |
17.5 |
310 |
|
12 |
19.5 |
345 |
Normal plasma glucose values
|
Fasting Blood Glucose |
70 – 100 mg/dL |
|
Two-hour Postprandial Blood glucose |
< 140 mg/dL |
|
Glycated Hemoglobin (HbA1c) |
4% ~ 5.6% |
Recommended glycemic goals for adults with type 1 or type 2 diabetes
|
Glycated Hemoglobin (HbA1c) |
< 7% |
|
Preprandial Plasma Glucose |
80 – 130 mg/dL |
|
Postprandial Plasma Glucose |
< 180 mg/dL |
|
Blood Pressure |
< 140/90 mmHg |
|
Low-density Lipoprotein Cholesterol |
< 100 mg/dL |
|
Triglyceride |
< 150 mg/dL |
|
High-density Lipoprotein Cholesterol |
> 40 mg/dL |
Important statements:
-
The target for glycemic control must be individualized, in the absence of hypoglycemia, patients’ glycated hemoglobin is aim to be less than 7%. It is necessary to notify your physician to adjust the regimen or dieting once hypoglycemia develops during diabetes treatment.
-
When the preprandial blood glucose level does not match glycated hemoglobin (HbA1c), measuring postprandial glucose level is needed.
-
Please contact diabetes education center if you have any questions .
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