Question:
Identify the blood grouping process done here. The slide shows the test cells with anti-D reagent and a control. Which blood group does this signify?
Identify the blood grouping process done here. The slide shows the test cells with anti-D reagent and a control. Which blood group does this signify?
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A reaction read against Anti-D reagent tells you the D antigen status, not the ABO type.
Updated On: Jun 23, 2026
- A-ve
- B+ve
- O+ve
- Rh group
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: The slide demonstrates testing of red cells with Anti-D reagent, which is the method used to determine the Rh (D) blood group, not the ABO group.
Step 2: The D antigen is the most important blood group antigen in routine blood banking after ABO. Agglutination (clumping) with Anti-D indicates D-positive cells, while no agglutination indicates D-negative cells.
Step 3: Antibodies of the Rh system do not occur naturally in serum. They develop only after antigen exposure, mostly during pregnancy or through transfusion.
Step 4: Because the reaction shown is read against Anti-D, the process identifies the Rh group. ABO-specific options (A-ve, B+ve, O+ve) describe end results of separate anti-A and anti-B testing and do not name what this single Anti-D process determines.
Step 2: The D antigen is the most important blood group antigen in routine blood banking after ABO. Agglutination (clumping) with Anti-D indicates D-positive cells, while no agglutination indicates D-negative cells.
Step 3: Antibodies of the Rh system do not occur naturally in serum. They develop only after antigen exposure, mostly during pregnancy or through transfusion.
Step 4: Because the reaction shown is read against Anti-D, the process identifies the Rh group. ABO-specific options (A-ve, B+ve, O+ve) describe end results of separate anti-A and anti-B testing and do not name what this single Anti-D process determines.
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