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  1. Rh Factor Explained - Red Cross Blood

    Jun 27, 2023 · If your blood type is positive, then your blood cells have the Rh protein. If your blood type is negative, then your blood cells lack the Rh protein. Although Rh positive is the most common …

  2. Rh blood group system - Wikipedia

    Rh (D) status of an individual is normally described with a positive (+) or negative (−) suffix after the ABO type (e.g., someone who is A+ has the A antigen and Rh (D) antigen, whereas someone who is …

  3. Rhesus (Rh) Factor: Incompatibility, Complications & Pregnancy

    The Rhesus factor, or Rh factor, is a certain type of protein found on the outside of red blood cells. People are either Rh-positive (they have the protein) or Rh-negative (they don’t have the protein).

  4. Rh factor blood test - Mayo Clinic

    Apr 30, 2025 · If your blood has the protein, you're Rh positive. If your blood doesn't have the protein, you're Rh negative. The "+" or "–" you might see after your blood type refers to Rh positive or Rh …

  5. Understanding Your Blood Type With the ABO System and Rh Factor

    Dec 7, 2025 · The ABO system has four major blood types: A, B, AB, and O. Blood types are further categorized by the presence (positive or +) or absence (negative or -) of the Rh (D) antigen on the …

  6. Understanding Blood Type & Rh Factor: Importance & Health ...

    In addition to the ABO system, the Rh factor is another important classification. The Rh factor refers to the presence (+) or absence (-) of a specific protein on red blood cells. If you have this protein, you …

  7. The Rh Blood Group System: Pregnancy and Transfusions

    Jul 23, 2025 · The distinction between Rh-positive and Rh-negative blood types primarily hinges on the presence or absence of the D antigen on red blood cells. Individuals are classified as Rh-positive if …