bone marrow test

What is a bone marrow test? A bone marrow test is a way of testing cells from your bone marrow. Bone marrow is the spongy tissue inside your bones that makes blood cells. Why do I need it? To find out whether there are any cancer cells in the bone marrow. You might also have one to check whether treatment is working. How do you have it and how long does it take? You have a local anaesthetic injection to numb a small area on your hip. The doctor puts a needle into your hip to suck out some bone