CRP levels in the group of clinically healthy pigs (median value = 4.69 ng/mL (3.02 and 9 ng/mL as 25th and 75th percentiles respectively)) were statistically significantly lower than those observed in the subgroups of local inflammation (p < 0.001; median value = 48.13 ng/mL (13.79 and 71.75 ng/mL as 25th and 75th percentiles respectively)) and gastrointestinal disorders (p < 0.0001; mean value = 140.4 ng/mL (17.41 and 210.9 ng/mL as 25th and 75th percentiles respectively)) (Fig 3F). Here, CRP is linked to digestive system disorder.