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To help you understand AML and its treatment, it’s useful to know a bit about your blood, how it’s made and what it does.
Blood is made up of blood cells, which float in a liquid called plasma. Blood cells are made in the bone marrow. This is a spongy material that’s found in the middle of our bones, particularly in our pelvis and backbone (spine). Normally, millions of new blood cells are made every day to replace old and worn-out blood cells.
All our blood cells are made from cells called stem cells. There are two types of stem cell:
In the bone marrow, the stem cells divide and grow to form fully developed (mature) red blood cells, platelets and white blood cells.
To begin with, new blood cells are immature. They don’t look like red blood cells, platelets or white blood cells, and they can’t yet do the jobs they’re supposed to do. These immature cells are called blast cells. Usually, blast cells stay in the bone marrow until they have matured into red blood cells, platelets or white blood cells.
These are then released into your blood to carry out different functions:
The levels of these cells in your blood are measured in a blood test called a full blood count (FBC). The figures below are a guide to the levels usually found in a healthy person.
Levels found in a healthy person
These figures can vary from hospital to hospital. Your doctor or nurse will be able to tell you what levels they use. They can also vary slightly between people from different ethnic groups.
The figures might look complicated when they’re written down, but in practice they’re used in a straightforward way. For example, you’ll hear doctors or nurses saying things like ‘your haemoglobin is 14’ or ‘your neutrophils are 4’. Most people with AML soon get used to these figures and what they mean. But remember, you can always ask your medical team for further explanation if you need it.
Content last reviewed: 1 February 2013
Next planned review: 2015
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