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What Is “Panda Blood”?

Aug 24, 2022 Source: Cainiu Health
Dr. Zhang Heyang
Introduction
“Panda blood” refers to Rh-negative blood. Because Rh-negative blood is extremely rare in China, it is colloquially termed “panda blood.” Rh-negative blood is one type within the Rh blood group system—a recessive genetic trait—comprising four subtypes: Rh-negative A, Rh-negative B, Rh-negative AB, and Rh-negative O. Among ethnic minorities in China, the prevalence of Rh-negative blood is relatively higher.

In daily life, people have various blood types. Individuals with incompatible blood types cannot receive blood transfusions from one another; only those with identical blood types may safely undergo transfusion. So, what exactly is “panda blood”?

What Is Panda Blood?

“Panda blood” is a colloquial term for Rh-negative blood. Because Rh-negative blood is extremely rare in China, it has earned this nickname. Rh-negative blood belongs to the Rh blood group system—a genetically recessive trait—and includes four subtypes: Rh-negative A, Rh-negative B, Rh-negative AB, and Rh-negative O. Among ethnic minorities in China, the prevalence of Rh-negative blood is relatively higher.

“Panda blood” is the popular name for the Rh-negative blood type. The two most widely used human blood group systems are the ABO and Rh systems. The ABO system classifies blood into four types—A, B, AB, and O—based on the presence or absence of A and B antigens on red blood cells. The Rh system, by contrast, categorizes blood as either Rh-positive or Rh-negative depending on whether the D antigen is present on red blood cells. In the Chinese population, over 99% are Rh-positive—the majority blood type—whereas Rh-negative individuals are exceedingly rare, hence the moniker “panda blood.” Notably, Rh-negative recipients are at high risk of immune-mediated hemolytic reactions during transfusion if incompatible blood is administered.

Humans possess multiple blood group systems, among which the ABO and Rh systems are most commonly applied clinically. The Rh system comprises two major categories: Rh-positive and Rh-negative. Since Rh-negative individuals are exceptionally rare, they are informally referred to as having “panda blood.” Importantly, “panda blood” confers no special health benefits; rather, it presents certain clinical challenges—particularly in emergency transfusion scenarios. We hope this article has been helpful to you.


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