A–Z Glossary

Rh factor

The Rh factor is an inherited red blood cell protein that determines whether a person has Rh-positive or Rh-negative blood.

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Routine blood tests in pregnancy

Routine blood tests in pregnancy

Why routine blood tests are part of prenatal care Pregnancy places extra demands on the cardiovascular, hematologic, endocrine, renal, and immune systems. Routine blood testing gives clinicians a baseline early in pregnancy and helps detect conditions that may be silent at first. For example, anemia may develop gradually, hepatitis B infection may be asymptomatic, and […]

Blood type Rh factor and Rh incompatibility

Blood type Rh factor and Rh incompatibility

What is the Rh factor? The Rh factor, often referring specifically to the D antigen in the Rh blood group system, is a protein on red blood cells. A person whose red blood cells carry this protein is Rh-positive. A person whose red blood cells do not carry it is Rh-negative. Rh status is inherited […]