You’ve never met. But, for someone who’s facing blood cancer, you might just be the most important person in the world. Please sign up today.

Every 20 minutes someone in the UK is diagnosed with a blood cancer, such as leukaemia. It’s a devastating diagnosis for anyone affected. But, there is hope: a potentially lifesaving blood stem cell donation from someone genetically similar.

Only one in three people with a blood cancer find a matching donor within their family. And so they must rely on a selfless stranger to have a second chance of life. That’s why we’re here. We find lifesavers, like you, and match them to people in urgent need of a blood stem cell donation.

Is there a lifesaver in you? Complete our pre-registration check to find out if you could be a potential blood stem cell donor and order your home swab kit today.

Because someone’s best chance to beat blood cancer could be in you.

Check your eligibility

Your age, location and current health status are important. Check to see if you can become a blood stem cell donor.

Your age, location and health are important

See if you are eligible

As a registered donor, you will be on standby to save life.

Do you live in the UK or British Islands?

DKMS in the UK accepts registrations from the UK, Channel Islands and the Isle of Man.

Is this your first registration with a stem cell donor registry?

Please enter your date of birth.

Have you had any of these conditions?

Check your eligibility

List of conditions

Please select measurement unit and enter your details

You are an eligible donor!

Thank you! You can become a potential donor! That’s it. You’re now on the road to becoming a lifesaving blood stem cell donor.

Thank you for your support.

We can only register people who live in the UK.


You might be able to register with one of our sister organisations below:

or you can...

Help us raise funds

Thank you for your support.

If you did register before, you do not need to register again.


There are other ways to help.

Help us raise funds

Thank you for your support.

To register as a potential blood stem cell donor, you must be between the ages of 17-55.


You can still help in other ways!

Thank you for your support.

Unfortunately you are not eligible to become a donor.


You can still help in other ways!

Thank you for your support.

To register you must weight at least 7 stone/13 lbs / 50 kg with a BMI below 40.


But there are still many other ways to help!


Have you had any of these conditions?

Before you register, please check that you are able to donate by looking at the list below.

You will NOT be able to register if you have any of the following conditions:

  • Weight under 7 stone 12lbs/50kg
  • Obesity (i.e. body mass index (BMI) >40) 
  • Severe heart, lung or kidney diseases 
  • Severe illness of the central nervous system
  • Severe mental health conditions
  • Severe metabolic diseases
  • Addictions (alcohol, drugs, tablets)
  • Severe tropical infectious diseases
  • Infectious diseases like HIV, Hepatitis B or Hepatitis C, Syphilis 
  • Systemic autoimmune diseases or other severe chronic illnesses (e.g. diabetes or rheumatism)
  • Cancer (including being cancer-free, but having had cancer in the past). Exception: Basalioma and cervical carcinomain situ (if  fully removed)
  • Diseases of the haematopoeitic system (blood disorders)

If you have or have had in the past, a chronic or serious condition, or take any medication regularly, please discuss this with a member of our team for initial guidance by calling us on T:020 8747 5620 or sending an email to donor@dkms.org.uk.

How to become a blood stem cell donor

How to become a blood stem cell donor with DKMS
How to become a blood stem cell donor with DKMS

Watch this short video to see what it means to be a potential blood stem cell donor. A three-minute cheek swab will put you on standby to save a life.

Acute lymphoblastic leukaemia survivor Jasmi and her mum Rena

Jasmi's story

“Jasmi’s been through so much since she was diagnosed with leukaemia, but she still manages to keep smiling. We’re absolutely over the moon that she’s found her matching donor. They’re just incredible. Thank you from the bottom of our hearts to everyone who’s signed up as potential lifesavers. You were all glimmers of hope in a very dark place.” RENA, Jasmi’s mum


We’ll send a swab kit straight to your home. When it arrives, please follow the instructions and swab the insides of your cheeks. Then simply seal your swabs in the envelope provided, pop it in the freepost return envelope and drop it in the post.

Once your swabs have been returned and your tissue type has been analysed, your details will be placed securely on the UK stem cell registry where they will be available for national and international donor searches for people in desperate need.


You can be a lifesaver on standby until you are 61. If you are identified as a potential match for someone, we will contact you to confirm your availability, talk you through the whole process and arrange further tests to check your suitability for the patient.

The process is completely anonymous. However, depending on the patient’s country of residence, and only if both parties agree, a donor and patient may be able to get in touch with each other after two years.


90% of stem cell donations are made via a peripheral blood stem cell collection. Here blood is taken from one of your arms and passed through a machine that isolates some of your blood stem cells. Your blood is then returned to you through your other arm. This method usually takes 4-6 hours.

In 10% of cases, stem cell donation is made via a bone marrow extraction. Here, marrow is extracted from the back of the pelvic bone under general anaesthetic. This method usually takes 1-2 hours.