Bone marrow test

A bone marrow test is a diagnostic procedure that is used to take a small sample of bone marrow, usually from your pelvis (hip bone).

What is a bone marrow test?

bone marrow test is a diagnostic procedure that is used to take a small sample of bone marrow, usually from your pelvis (hip bone).  

There are two types of bone marrow test:  

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What is bone marrow?

Bone marrow is the spongy tissue in the centre of some of your bigger bones such as the thigh bones, breastbone, pelvis and backbones. The bone marrow is where blood cells are made – it contains blood stem cells that can develop into more specialised blood cells such as white blood cells, red blood cells and platelets. These are gradually released into the bloodstream. 

Why would I need a bone marrow test?

Your consultant may recommend a bone marrow test iyou have symptoms of a blood or bone marrow cancer or an abnormal blood testA bone marrow test is the best way to check for problems that may be causing these symptoms and help your consultant provide an accurate diagnosis. You may also have a bone marrow test to help plan treatments, see how well they’re working, or determine if cancer has spread from another part of your body to your bone marrow.  

What happens during a bone marrow test?

Before we carry out your bone marrow tests, we’ll ask you to sign a consent form. This states that you agree to have the procedure and you understand what it involves. We want to involve you in all decisions about your care and treatment. You can always talk to a member of your care team if you’d like more information about our consent process. 

Bone marrow biopsies are usually taken from your pelvis (hip bone). At the start of the bone marrow test, your consultant or nurse will ask you to lie on your side and bend your knees up towards your chest. You’ll need to keep as still as possible during the procedure. 

 

The skin over your pelvic area will be cleaned, and a local anaesthetic will be injected to numb the region from which the sample will be taken. 

When you’re ready, and the local anaesthetic has taken effect, your consultant or nurse will perform an aspiration by passing the needle into your pelvis and taking a small sample of liquid marrow. You might feel a pulling sensation which can be a little uncomfortable as the sample is drawn, but this will quickly pass. 

Sometimes, a bone marrow aspiration is all that is needed. If you’re also having a trephine biopsy (where a tiny core of the bone marrow tissue is removed), a second needle will be inserted into your pelvis by your consultant or nurse. You might experience a pushing sensation or a feeling of pressure building up as this is performed, but this too will quickly pass. 

Once the procedure is finished, you’ll need to stay lying down for no more than 30 minutes so we can ensure theres no bleeding. You’ll have a dressing applied over the site of your bone marrow test and you can go straight home afterwards. You’ll need to keep your bandage on for at least 24 hours and should avoid getting it wet in that time. 

There are no special preparations needed for your bone marrow test. You’ll need to let us know of any medication you’re taking, and if you’re allergic to any medication, anaesthetic or dressings. 

The time it takes to perform the procedure depends on how many bone marrow samples are taken. It usually takes around 15 minutes per sample. If you’re having both a bone marrow aspiration and trephine biopsy, you can expect the whole procedure to last 30 minutes. 

You may feel some pain or discomfort as the sample is taken, but this should pass very quickly. As the anaesthetic starts to wear off, you may feel a bruising or aching sensation around the site from which your sample was taken.  

You can take pain relief such as paracetamol in the days after your test if you need to. You should get in touch with your GenesisCare team if you feel you need some stronger pain relief, the pain continues for more than a few days, or you have significant bleeding or bruising.  

We know that waiting for a test result can be a worrying time, so we aim to get your results to you as quickly as possible. The bone marrow samples will be sent to the laboratory for analysis, and your results will be back within five to seven daysA copy of your results will be shared with your GP and we’ll contact you to arrange an appointment to discuss them with you. 

Is a bone marrow test safe?

Bone marrow tests are routinely performed without any issues. Before you go ahead with the testyour consultant or nurse will explain any potential complications of the procedure and advise on managing them should they occur. You’ll also be given plenty of time to ask any questions. 

Possible side effects include:

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