Polyspecific antiglobulin reagent is usually what color?

Polyspecific antiglobulin reagent is usually what color?

• A. blue
• B. green
• C. red
• D. yellow

Answer: (B)

Color-coding helps you quickly identify reagent types. A polyspecific antiglobulin reagent is designed to detect both IgG bound to red cells and complement (C3). In many common reagent kits, this broader reactivity is coded green to distinguish it from monospecific reagents that detect only IgG or only C3, which are often blue or red, respectively. The color doesn’t change how the reagent works; it’s simply labeling. So the usual color you’ll see for polyspecific AHG is green.

Color-coding helps you quickly identify reagent types. A polyspecific antiglobulin reagent is designed to detect both IgG bound to red cells and complement (C3). In many common reagent kits, this broader reactivity is coded green to distinguish it from monospecific reagents that detect only IgG or only C3, which are often blue or red, respectively. The color doesn’t change how the reagent works; it’s simply labeling. So the usual color you’ll see for polyspecific AHG is green.