What is the primary purpose of the immediate spin crossmatch test in blood banking?

A To detect ABO incompatibility ✓
B To detect Rh incompatibility
C To detect antibodies against white blood cells
D To detect bacterial contamination

Explanation

The immediate spin crossmatch test is used to quickly detect ABO incompatibility between the donor's red blood cells and the recipient's plasma.

Source

American Association of Blood Banks (AABB) guidelines
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Easy MEDICAL Confidence: high