Table 3

Mean faecal calprotectin values in FDRs according to IBD antibody and radiographic status

FDR statusMean fCal (mcg/g)p Value
Positive for sacroiliitis (SI) findings in MRI74.650.18
Negative for sacroiliitis (SI) findings in MRI40.85
Positive for IBD antibodies54.640.63
Negative for IBD antibodies42.69
Negative for SI and IBD antibodies37.06
  • fCal, faecal calprotectin; FDR, first-degree relative; IBD, inflammatory bowel disease.