What is the primary purpose of using albumin in blood banking for crossmatching?

A To enhance the reactivity of antibodies
B To prevent hemolysis of red blood cells
C To increase the viscosity of the testing medium
D To reduce the risk of transfusion-related acute lung injury
Albumin is used to increase the viscosity of the testing medium, allowing for better visualization of agglutination reactions during crossmatching.
Technical Manual of the American Association of Blood Banks
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high