Which of the following enzymes is used to modify red blood cells for use in adsorption tests to identify alloantibodies?

A Papain ✓
B Ficin
C Bromelain
D Trypsin

Explanation

Papain is an enzyme that is used to modify red blood cells, making them more susceptible to adsorption tests, which helps in identifying alloantibodies.

Source

International Society of Blood Transfusion (ISBT) guidelines
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high