Final answer:
The non-invasive test that can be used to detect severe fetal anemia in a case of isoimmunization is the indirect Coombs test or the indirect antiglobulin test (IAT). This test screens pregnant women for antibodies that may cause hemolytic disease in the newborn and can also be used prior to blood transfusions.
Step-by-step explanation:
The non-invasive test that can be used to detect severe fetal anemia in a case of isoimmunization is the indirect Coombs test or the indirect antiglobulin test (IAT).
This test screens pregnant women for antibodies that may cause hemolytic disease of the newborn. It can also be used prior to blood transfusions.
The indirectCoombs' test looks for antibodies against red blood cell antigens that are unbound in the patient's serum.