Cross-Matched Test Check Using Gel Method (Column Agglutination Test) Ni Putu Yunita Puspitra Sari1*, Raehana Samad2,3, Rachmawati A Muhiddin4 Abstract Crossmatch test is a test between the donor’s blood and the patient’s blood that is principally done in vitro and must be done before blood transfusion. The crossmatch test is