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How do doctors decide if a donor is a match for a stem cell transplant?

Doctors use a blood test to make sure people are a good match with their stem cell transplant donor by comparing their human leukocyte antigen (HLA) markers to the donor’s. Basically, the closer the donor’s HLA type is to that of the person getting the stem cell transplant, the less likely the immune system is to attack, meaning there’s a better chance the transplant will work.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.