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Also known as: Hb
Related tests: Full blood count, haematocrit, mean corpuscular haemoglobin concentration (MCHC), mean corpuscular haemoglobin (MCH), mean corpuscular volume (MCV), reticulocyte count

At a Glance

Why Get Tested?

If you have anaemia (too few red blood cells) or polycythaemia (too many red blood cells), to assess its severity, and to monitor response to treatment

When to Get Tested?

As part of a full blood count (FBC), which may be requested for a variety of reasons

Sample Required?

A blood sample collected from a vein in your arm or by a finger-prick (children and adults) or heel-prick (newborns)

Test Preparation Needed?

Ideally you should be reasonably hydrated when having a haemoglobin test or the result may be inaccurately high.