What percentage of people are Rh positive?

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Multiple Choice

What percentage of people are Rh positive?

Explanation:
Rh positivity means red blood cells carry the D antigen. In most populations, about four-fifths of people express this antigen, which translates to roughly 85% being Rh positive and about 15% Rh negative. This general figure is widely used even though there is some variation by ethnicity and region. Knowing this prevalence helps in transfusion and pregnancy care, since Rh incompatibility can cause problems if an Rh-negative person is exposed to Rh-positive blood. So the best general estimate for Rh positive individuals is about 85%.

Rh positivity means red blood cells carry the D antigen. In most populations, about four-fifths of people express this antigen, which translates to roughly 85% being Rh positive and about 15% Rh negative. This general figure is widely used even though there is some variation by ethnicity and region. Knowing this prevalence helps in transfusion and pregnancy care, since Rh incompatibility can cause problems if an Rh-negative person is exposed to Rh-positive blood. So the best general estimate for Rh positive individuals is about 85%.

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