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We tested the performance of a novel calprotectin rapid test, Quantum Blue, versus the conventional enzyme\u2010linked immunosorbent assay in 134 stool samples from 56 pediatric patients with Crohn disease. The intraclass correlation coefficient analysis reflected good agreement (intraclass correlation coefficient 0.97 [95% confidence interval 0.95\u20130.98]) but agreement was better in lower values, where dilutions were not required. Using a cutoff of 100 \u03bcg\/g for normal values, the percentage agreement between the 2 tests was 87%. The optimal cutoff values to guide clinical decisions in the therapy of inflammatory bowel disease have yet to be determined.<\/jats:p>","DOI":"10.1097\/mpg.0b013e318253cff1","type":"journal-article","created":{"date-parts":[[2012,3,9]],"date-time":"2012-03-09T12:54:14Z","timestamp":1331297654000},"page":"436-439","source":"Crossref","is-referenced-by-count":31,"title":["Rapid Test for Fecal Calprotectin Levels in Children With Crohn Disease"],"prefix":"10.1002","volume":"55","author":[{"given":"KL","family":"Kolho","sequence":"first","affiliation":[{"name":"Children's Hospital Helsinki University Central Hospital University of Helsinki Helsinki Finland"}]},{"given":"D.","family":"Turner","sequence":"additional","affiliation":[{"name":"Pediatric Gastroenterology Unit Shaare Zedek Medical Center Hebrew University of Jerusalem Israel"}]},{"given":"G.","family":"Veereman\u2010Wauters","sequence":"additional","affiliation":[{"name":"Pediatric Gastroenterology Unit University Hospital UZ Brussels Belgium"}]},{"given":"M.","family":"Sladek","sequence":"additional","affiliation":[{"name":"Polish\u2010American Children's Hospital Jagiellonian University School of Medicine Krakow Poland"}]},{"given":"L.","family":"de Ridder","sequence":"additional","affiliation":[{"name":"Pediatric Gastroenterology Unit Erasmus MC\u2010Sophia Children's Hospital Rotterdam The Netherlands"}]},{"given":"R.","family":"Shaoul","sequence":"additional","affiliation":[{"name":"Meyer Children's Hospital Rambam Medical Center Haifa Israel"}]},{"given":"A.","family":"Paerregaard","sequence":"additional","affiliation":[{"name":"Department of Pediatrics Hvidovre Hospital Hvidovre Denmark"}]},{"given":"J. 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