What is the purpose of using a 'parallel testing' approach in resolving ABO discrepancies during blood typing?

A To detect weak or partial expression of ABO antigens
B To identify the presence of alloantibodies against ABO antigens
C To distinguish between A1 and A2 subgroups
D To resolve discrepancies between forward and reverse typing results ✓

Explanation

Parallel testing involves performing both forward and reverse typing simultaneously to resolve discrepancies between the two results, ensuring accurate ABO blood group determination.

Source

Technical Manual of the American Association of Blood Banks
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high