16/04/2025
What is HbA1c?
HbA1c or “haemoglobin A1c” is a type of haemoglobin (the iron-containing pigment in red blood cells that carries oxygen and that makes your blood red). HbA1c is special: it holds a record of how often your blood cells were subjected to glucose spikes during their lifetimes, by having a sugar molecule attached to it. Hence it is called “glycated haemoglobin”.
If your blood is being increasingly affected by sugar spikes (both in frequency and intensity), your blood’s average sugar exposure increases. And your HbA1c level reflects this by increasing. (In case you were wondering, this is what we know as midday “crashes”, severe hunger pangs, feeling “hangry”, and not feeling sated after a meal.)
So HbA1c is a way of estimating your average blood glucose concentration. It is an estimate because HbA1c doesn’t measure your blood glucose directly but infers it from the amount of glycated haemoglobin in your blood.
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