HbA1c to eAG Calculator

[ranj]

I have tried to convert my A1C of 6.6% to eAG and ADA websites convert it to 125.

However, I have seen another calculation of Equation:

eAG = (28.7 X A1C) - 46.7 eAG which has given the result of 142.

Which one is correct

[patliputra]

At present there are two systems of converting A1c into bloo d sugar in mg/dl .One is called DCCT System, other is called ADAG System.There Is no uniform system which is followed universally.

Formula for calculation under DCCT is A1c multiply by 35-75= Blood sugar in mg/dl.

In ADAG A1c multiply by28.7-46.7=bs in mg/dl.

Reading is always higher in DCCT calculation.As both systems of calculation are in vogue it advised to ask for system of calculation from path. labs.

[ranj in reply to patliputra]

Thank you for your inputs. My Lab has given the result of Hba1C only. I have referred my earlier Thyrocare Lab Report and they have mentioned ABG of 157 against Hba1C of 7.1. It means formula prevalent is Hba1C X 28.7- 46.7= ABG / eAG.

[ranj]

You are perfectly right. ADA online calculator is giving only in integers 5,6,7 ... and ignoring the decimal value.

[ranj]

From 6.6 to 7.1 and now again back of 6.6 with your great help. Nathan's or DCCT formula hardly matters. One should aim for your 5% club membership.