The Blood glucose and HbA1C testing

When you check your blood glucose with a meter, you measure blood glucose at the moment you perform the test. This number gives you key feedback for making present and day-to-day adjustments in your diabetes management.

The HbA1C test, done at your doctor's, shows you your average blood glucose over the last 60 to 90 days. Both blood glucose and HbA1C testing are necessary for good diabetes management. In simple terms the glucose that has been retained in the hemoglobin of the blood is measured to give a precise outlook on the BG levels.

Sustained high BG levels can cause serious long term problems. These problems may be prevented and/or delayed if you maintain your blood glucose levels close to normal. The best measure of your overall blood glucose is the HbA1C test. It has been proven that an

HbA1C level of 7.0 or less greatly reduces the risk of problems from diabetes. But, any reduction in HbA1C is a plus. It is recommended that your HbA1C should be tested at least once in every THREE MONTHS by your doctor.

BG Level recommendations for adults with Type 1 diabetes

Glycemic control HbA1C--------------------------------------------- <7.0 percent

Preprandial plasma glucose (before meals) -------------------- 90-130 mg/dL (5.0-7.2 mmol/L)

Peak postprandial plasma glucose (1-2 hours after meals)---<180 mg/dL (<10.0 mmol/L)


6 %------------------135 mg/dL

7 %------------------170 mg/dL

8 %------------------205 mg/dL

9 %------------------240 mg/dL

10 %-----------------275 mg/dL

11 %-----------------310 mg/dL

12 %-----------------345 mg/dL

Source :- American Diabetes Association. Diabetes Care. “Tests of Glycemia in Diabetes.” &“Standards of Medical Care.” Vol. 31, Supplement 1, January 2008. S18.

3 Replies

  • A1C of 7 is too high a value. It should be below 6... because anytime if sugar level goes beyond 140 cellular damage starts.

    New standards are PPBS 140 (at 2 hrs).

    Levels of 180 for 2 hr PPBS is history :)

    So also the FBS levels that you noted.

  • Mr Anup I am specific on TYPE 1... The levels mentioned by me are for TYPE 1 and not TYPE 2. What you have mentioned is for Type 2.

  • Ok my bad. I was under impression that cellular damage starts at 140+ so 140 was the limit for everyone:

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