Figure 1.

Interpretation of agglutination reaction results of crossmatch tests performed with antiglobulin‐enhanced gel column kit (AGC) crossmatch test and gel column card without antiglobulin (GC). The strength of the agglutination reaction is described as: 0 (negative), all red blood cells (RBCs) are at the bottom of the tube; 1+ (positive), few RBCs' agglutinates are dispersed in the gel, but most of the RBCs are at the bottom of the tube; 2+ (positive), all RBCs' agglutinates are dispersed in the gel; 3+ (positive), some RBCs' agglutinates are dispersed in the upper part of the gel, most of the RBCs form a red line on the surface of the gel; and 4+ (positive), all RBCs are agglutinated and form a red line on the surface of the gel