How does HbA1C work?

Answered by 1 Apollo Doctors

Dr Kamran Mohammed

General Practitioner

MBBS
FIDM
5+ Yrs

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The amount of HbA1c formed is directly related to the amount of glucose in your blood. Red blood cells live for an average of 120 days, so HbA1c gives an indication of how much sugar there has been in your blood over the past few months.

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Answered 24/07/2025

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