Question

A blood specimen from the mother may be substituted for serological testing on donors less than?

a. 28 days or less
b. 60 days or less
c. 90 days or less
d. 120 days or less

Answer 1

A blood specimen from the mother can be substituted for serological testing on blood donors less than 90 days.

Step-by-step explanation:

In the context of serological testing on blood donors, a blood specimen from the mother may be substituted for donors less than 90 days or less. This is because some individuals may have antibodies against antigens outside the ABO or Rh systems due to repeated exposure from multiple pregnancies or transfusions. To ensure compatibility, the patient's serum is checked against type O red blood cells that express these antigens. If agglutination occurs, the antigen must be identified and determined not to be present in the donor unit.