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  2. Rh factor testing - Wikipedia

    en.wikipedia.org/wiki/Rh_factor_testing

    The entire Rh blood group system involves multiple antigens and genes. For Rh factor testing, however, only the Rhesus factor correlated to the RhD antigen is assayed. The RhD gene that codes for the RhD antigen is located on chromosome 1. This chromosome contains gene instructions for making proteins in the body. [3]

  3. Rh disease - Wikipedia

    en.wikipedia.org/wiki/Rh_disease

    The fetal Rh can be screened using non-invasive prenatal testing (NIPT). This test can screen for the fetus's Rh antigen (positive or negative) at the 10th week of gestation using a blood sample drawn from the mother. The Unity test uses NGS technology to look for Rh alleles (genes) in the cell free fetal DNA in the maternal bloodstream.

  4. Blood compatibility testing - Wikipedia

    en.wikipedia.org/wiki/Blood_compatibility_testing

    Blood compatibility testing is routinely performed before a blood transfusion.The full compatibility testing process involves ABO and RhD (Rh factor) typing; screening for antibodies against other blood group systems; and crossmatching, which involves testing the recipient's blood plasma against the donor's red blood cells as a final check for incompatibility.

  5. Rho(D) immune globulin - Wikipedia

    en.wikipedia.org/wiki/Rho(D)_immune_globulin

    Rh o (D) immune globulin (RhIG) is a medication used to prevent RhD isoimmunization in mothers who are RhD negative and to treat idiopathic thrombocytopenic purpura (ITP) in people who are Rh positive. [2] It is often given both during and following pregnancy. [2] It may also be used when RhD-negative people are given RhD-positive blood. [2]

  6. Amniocentesis - Wikipedia

    en.wikipedia.org/wiki/Amniocentesis

    The Rh factor is an inherited protein found on the surface of red blood cells. [19] If the mother is Rh negative and the father is Rh positive, a fetus has at least a 50% chance of being Rh positive. [19] Rh incompatibility occurs when a mother has Rh-negative blood and her baby has Rh-positive blood. [19]

  7. Rh blood group system - Wikipedia

    en.wikipedia.org/wiki/Rh_blood_group_system

    The name rhesus factor (Rh) goes back to the use of erythrocytes extracted from the blood of rhesus monkeys for obtaining the first blood serum. The Rh blood group system is a human blood group system. It contains proteins on the surface of red blood cells. After the ABO blood group system, it is the most likely to be involved in transfusion ...

  8. Hemolytic disease of the newborn (anti-Kell) - Wikipedia

    en.wikipedia.org/wiki/Hemolytic_disease_of_the...

    Cell-free DNA can be used the determine the Rh antigen of the fetus when the mother is Rh negative. Blood is taken from the mother during the pregnancy, and using PCR, can detect the K, C, c, D, and E alleles of fetal DNA. This blood test is non-invasive to the fetus and is an easy way of checking antigen status and risk of HDN.

  9. Cross-matching - Wikipedia

    en.wikipedia.org/wiki/Cross-matching

    Cross-matching or crossmatching is a test performed before a blood transfusion as part of blood compatibility testing. Normally, this involves adding the recipient's blood plasma to a sample of the donor's red blood cells. If the blood is incompatible, the antibodies in the recipient's plasma will bind to antigens on the donor red blood cells.