Assessment of high-sensitivity CRP as a marker of micro-inflammation in irritable bowel syndrome

K. Hod, R. Dickman, A. Sperber, S. Melamed, R. Dekel, Y. Ron, Z. Halpern, S. Berliner, N. Maharshak

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Background The diagnosis of irritable bowel syndrome (IBS) is symptom-based. Although considered a functional disease, accumulating evidence supports a low-grade gut inflammation as an element of its pathophysiology. Thus, high-sensitivity C-reactive protein (hs-CRP), a marker of micro inflammation, may be elevated in IBS. Our aim was to assess whether hs-CRP is higher in IBS patients compared to healthy controls (HC) and does it differ among the IBS clinical subgroups and correlate with disease severity. Methods A diagnostic case control study was conducted in two gastroenterology departments. Eighty-eight IBS patients who were recruited prospectively answered the Rome III diagnostic questionnaire. They all completed the Functional Bowel Disorder Severity Index (FBDSI), dietary, and general health questionnaires. All patients underwent blood sampling for hs-CRP levels. Each IBS patient was matched to four HC by age, gender, and BMI. Blood samples were obtained from the HC at a periodic health survey. Key Results The mean hs-CRP level in the IBS group was significantly higher than in HC (1.17±1.26mgL -1vs 0.72±0.91mgL -1 respectively, P=0.001). Hs-CRP levels were highest in patients with diarrhea-predominant IBS and in patients with greater disease severity. A cut-off value of 1.08mgL -1 had a sensitivity of 60.2% and a specificity of 68% for differentiating IBS from HC. Conclusions & Inferences Hs-CRP levels are higher in IBS patients than HC, but still in the normal laboratory range. This may reflect the low-grade gut inflammation believed to occur in IBS and support its existence.

Original languageEnglish
Pages (from-to)1105-1110
Number of pages6
JournalNeurogastroenterology and Motility
Issue number12
StatePublished - 1 Dec 2011
Externally publishedYes


  • High-sensitivity C-reactive protein
  • Irritable bowel syndrome
  • Low grade inflammation

ASJC Scopus subject areas

  • Physiology
  • Endocrine and Autonomic Systems
  • Gastroenterology


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