Complex sentence: Calprotectin becomes available in the intestinal lumen via leukocyte shedding, active secretion, cell disturbance and cell death result in elevated faecal calprotectin levels, which can be detected in the stool.
Split into simpler sentences: Calprotectin becomes available in the intestinal lumen via leukocyte shedding, active secretion, cell disturbance and cell death. This results in elevated faecal calprotectin levels, which can be detected in the stool.