Statistics from DKMS, a charity dedicated to fighting blood cancer, show that every 20 minutes someone in the UK is diagnosed with a condition such as leukaemia, myeloma or lymphoma.
There is no single cure, but a blood stem cell donation from a genetically similar person can offer the best treatment.
Anyone in the UK aged between 17 and 55 and in general good health can register with DKMS to become a donor.
In 2017 more than 20,000 Scottish people registered, taking the total registered in Scotland to 104,974.
In Dundee, there are 2,385 donors registered with DKMS.
To register visit www.dkms.org.uk.
Another major charity helping to raise awareness of blood cancer and blood disorder is Anthony Nolan.
Amy Bartlett, regional register development manager for Anthony Nolan Scotland, said: “Every day at least five people start their search for a matching unrelated stem cell donor.
“What many people don’t realise is how simple it is to join the register – the first step is to fill out a form. We’ll send you a kit which requires you to swab the inside of your cheeks and send the swabs back.
“Whenever a patient with blood cancer or a blood disorder needs a lifesaving stem cell transplant, we’ll search the register, looking for someone who’s a genetic match for that patient.
“Anybody could be the perfect match for someone in need.
“If you’re aged 16-30 and are in general good health, making the decision to join the Anthony Nolan register is an action which could save someone’s life.”