Determination of which of the following is useful in the detection of inflammatory processes?

• A. Fibrinogen
• B. Total protein
• C. Hematocrit
• D. RBC morphology

Answer: (A)

Inflammation triggers the liver to make acute-phase proteins, and fibrinogen is one of the primary ones that rises. When inflammatory signals circulate, fibrinogen levels increase, reflecting active inflammatory processes. Higher fibrinogen also makes red blood cells more likely to stack together (rouleaux), which raises the erythrocyte sedimentation rate, a classic clue that inflammation is present. Among the options, fibrinogen directly mirrors inflammatory activity, making it the best indicator. Total protein can change for many reasons and isn’t specific to inflammation, hematocrit measures red cell volume rather than inflammatory status, and RBC morphology shows cell appearance rather than inflammatory activity.