Calprest ELISA vs. Liaison® chemiluminescence : evaluating accuracy, efficiency, and clinical utility in fecal calprotectin testing

Osredkar, Joško (author), Ekart, Nina (author), Drobne, David (author)

Background: Ulcerative colitis (UC) management relies on accurately assessing disease activity. Fecal calprotectin (FC) is a promising non-invasive biomarker, but method-specific differences in measurement can affect interpretation. Objective: To compare the performance of Calprest ELISA and DiaSorin Liaison CLIA in measuring FC concentrations and their correlation with endoscopic findings in UC. Methods: Stool samples from 40 UC patients were analyzed using both methods, with 138 samples collected across three clinical timepoints. Spearman’s correlation, Wilcoxon test, Bland–Altman analysis, and ROC curves were used to evaluate method agreement and diagnostic performance relative to Mayo endoscopic scores. Results: A total of 135 paired results showed strong correlation (ρ = 0.795, p < 0.001) but significant inter-method differences (p = 0.039). Liaison tended to yield higher FC values. ROC analysis established optimal cut-offs for detecting endoscopic remission and active disease: 47.95/69.55 µg/g (Liaison) and 65/125 µg/g (Calprest). Calprest demonstrated slightly better diagnostic accuracy. Conclusions: Both methods are reliable for monitoring UC activity. Calprest offers greater dynamic range, while Liaison excels in automation and speed. Method-specific thresholds should guide clinical interpretation to ensure accurate disease monitoring.

• Language: English
• Keywords: ulcerative colitis, fecal calprotectin, statistical analysis, endoscopy, ELISA, CLIA, endoscopic Mayo index
• Work type: Article
• Typology: 1.03 - Other scientific articles
• Organization: FFA - Faculty of Pharmacy; MF - Faculty of Medicine
• Publication status: Published
• Publication version: Version of Record
• Year: 2026
• Number of pages: 11 str.
• Numbering: Vol. 11, issue 1, art. 143
• PID: 20.500.12556/RUL-179607
• UDC: 616.348-002
• ISSN on article: 2227-9059
• DOI: 10.3390/biomedicines14010143
• COBISS.SI-ID: 264601091
• Publication date in RUL: 18.02.2026

Record is a part of a journal

• Title: Biomedicines
• Shortened title: Biomedicines
• Publisher: MDPI
• ISSN: 2227-9059
• COBISS.SI-ID: 523006745

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: ulcerozni kolitis, fekalni kalprotektin, statistična analiza, endoskopija, ELISA, CLIA, endoskopski Mayo indeks, ulcerozni kolitis, endoskopija

Projects

• Funder: University Medical Centre Ljubljana
• Project number: 20210034