Haemoglobin 11.4 g/dL — what does it mean?

What this test is

The protein inside your red blood cells that carries oxygen from your lungs out to the rest of you.

What your number means

We treat this one as a yes-or-no rather than a sliding scale, because that is what the research supports: below the cut-off there is a clear, measured effect, and above it there is no evidence that more is better. So being comfortably above the line is the whole goal — pushing higher buys nothing.

Why it matters

Every repair your body makes runs on oxygen, so if delivery drops, everything downstream slows with it.

Think of red blood cells as delivery vans and haemoglobin as the cargo each one carries. Fewer vans or lighter loads means less oxygen reaching the places doing the repair work.

What to do about it

If it is low, the important thing is finding out why rather than just taking a supplement — iron shortage, low B12, and slow blood loss all look the same on this line but need different fixes. Ask your doctor to look for the cause.

Where it sits in your Body Age

Haemoglobin is one of the tests behind Blood Renewal — How cleanly your body is building fresh blood cells, day after day. It is one of four areas that together give a single number: the age your body reads, next to the age on your birth certificate.