Impact of Preanalytical Factors on Calprotectin Concentration in Stool: A Multiassay Comparison.
Henrike M HamerA H Leontine MulderNanne K de BoerFemke CrouwelPatrick Ferry van RheenenMarlies SpekleMarloes VermeerLucie Wagenmakers-HuizingaAnneke C Muller KoboldPublished in: The journal of applied laboratory medicine (2022)
Fecal calprotectin concentration in stool samples declines over time, and the rate of decline is greater at higher temperatures. In extracted feces stored at 4°C, calprotectin is most stable. It is assay-dependent how long extracted feces stored at 4°C give reliable test results.