This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
Specific marker for intestinal inflammation 
Select and explain. 
A. C-reactive protein, B. Fecal lactoferrin, C. Erythrocyte sedimentation rate, D. Leukocytosis
B: Fecal lactoferrin
Answer: B: Fecal lactoferrin 
Explanation: Fecal lactoferrin is a highly sensitive and specific marker for detecting intestinal inflammation. Fecal calprotectin levels correlate well with histologic inflammation, predict relapses, and detect pouchitis. Both fecal lactoferrin and calprotectin are becoming an integral pa of IBD management and are used frequently to rule out active inflammationRef: Harrison 19e pg: 1952