I have both positive and negative blood. How?

Question

Hi doctor,

When I was 17, I donated blood. They sent me a card with my blood type B positive. When I was pregnant, the first time they tested it twice and told me it was B negative. I thought the donation test had been wrong. After my second child, my doctor upon hearing this story checked my blood again, and it came up B positive. He then told me I had something that allowed me to have both blood types. I cannot remember what he called it. Can you help me?

Answer 1

Hi,

Welcome to icliniq.com.

A person who has more than one set of DNA is a chimera, and the condition is called chimerism.

Chimerism usually does not cause problems. It is rarely diagnosed and making it hard for scientists to say how prevalent the phenomenon truly is.

It is probably less rare than was once thought and a very rare case scenario.

It is the only thing which can explain your problem. However, I would suggest you go for blood group check up three times every two weeks.

For further information consult an internal medicine physician online --> https://www.icliniq.com/ask-a-doctor-online/internal-medicine-physician

I have both positive and negative blood. How?

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