Table 1

 Performance and qualities of an ideal marker

IBD, inflammatory bowel disease.
• SimpleBe disease specific: identify individuals at risk for IBD and differentiate IBD from non-IBD
• Easy to performAble to objectively measure disease activity
• Not or minimally invasiveAble to predict the disease course (relapse or recurrence)
• CheapAble to monitor the effect of treatment
• RapidHave a prognostic value in assessing morbidity/mortality
• Reproducible between labs and individuals