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Haemoglobin A1c
This glycated fraction of haemoglobin ,which is a constituent of the red blood cells(RBC), depends on the level of sugar during the production of the RBCs . These cells live for about 120 days and the production is continuous.
The table below shows the level of HbA1c reflecting the average reading of blood sugar in a period extending back 6 weeks to 3 months. The current guidelines take HbA1c of less than 7.5%, and less than 6.5% in the presence of complications as ideal. Evidence shows that staying below 6.5% precludes complications.
|
Plasma Laboratory result mmol/L |
Whole blood BM result mmol/L |
Haemoglobin A1c |
New HbA1c Units mmol/mol |
|
3.5 |
3.1 |
4 |
|
|
5.5 |
4.9 |
5 |
|
|
7.5 |
6.7 |
6 |
42 |
|
9.5 |
8.5 |
7 |
53 |
|
11.5 |
10.3 |
8 |
64 |
|
13.5 |
12.1 |
9 |
75 |
|
15.5 |
18.8 |
10 |
|
|
17.5 |
15.6 |
11 |
|
|
19.5 |
11.4 |
12 |
|