Which stain is used to visualize iron-containing inclusions in red blood cells such as siderocytes and Pappenheimer bodies?

Which stain is used to visualize iron-containing inclusions in red blood cells such as siderocytes and Pappenheimer bodies?

• A. Wright stain
• B. Prussian blue stain
• C. Giemsa stain
• D. Wright-Giemsa stain

Answer: (B)

The test focuses on detecting ferric iron in red blood cell inclusions. Prussian blue stain (Perls’ stain) binds ferric iron to form a blue ferric ferrocyanide complex, making iron-containing inclusions like siderocytes and Pappenheimer bodies readily visible. The other stains—Wright, Giemsa, and Wright–Giemsa—are general cellular stains used for morphology and do not specifically highlight iron content, so they won’t reliably reveal these iron-containing inclusions. Thus, Prussian blue is the stain of choice for confirming the presence of iron within RBC inclusions.

The test focuses on detecting ferric iron in red blood cell inclusions. Prussian blue stain (Perls’ stain) binds ferric iron to form a blue ferric ferrocyanide complex, making iron-containing inclusions like siderocytes and Pappenheimer bodies readily visible. The other stains—Wright, Giemsa, and Wright–Giemsa—are general cellular stains used for morphology and do not specifically highlight iron content, so they won’t reliably reveal these iron-containing inclusions. Thus, Prussian blue is the stain of choice for confirming the presence of iron within RBC inclusions.