(112 days)
The ALPCO Calprotectin Chemiluminescence ELISA is an in vitro diagnostic chemiluminescent assay intended for the quantitative measurement of fecal calprotectin, a neutrophilic protein that is a marker of intestinal mucosal inflammation, in human stool. The ALPCO Calprotectin Chemiluminescence ELISA is intended for in vitro diagnostic use as an aid in the diagnosis of inflammatory bowel disease (IBD), specifically Crohn's disease (CD) and ulcerative colitis (UC), and as an aid in the differentiation of IBD from irritable bowel syndrome (IBS) in conjunction with other clinical and laboratory findings.
The ALPCO Easy Stool Extraction Device is intended for use in the preparation of human stool specimens for testing in the ALPCO Calprotectin Chemiluminescence ELISA.
The ALPCO Calprotectin Chemiluminescence ELISA is performed on stool samples, collected without preservatives. After an extraction procedure of the stool sample, using either the manual weighing or Easy Extraction Device procedure, the test allows the selective measurement of calprotectin-antigen by sandwich ELISA. A monoclonal capture antibody (mAb) highly specific to the calprotectin heterodimeric and polymeric complexes, respectively, is coated onto the microtiter plate. Calibrators, controls and specimen extracts are incubated. After a washing step, a biotinylated secondary monoclonal detection antibody detects the calprotectin molecules bound to the antibody coated onto the plate. After incubation and a further washing step, a Streptavidin-Horseradish Peroxidase Enzyme conjugate binds to the available biotin on the immobilized secondary antibody. A chemiluminescent substrate is added and read when the substrate glows as a result of its oxidation with the enzyme. The signal is then read on a chemiluminescent plate reader.
Here's an analysis of the acceptance criteria and study detailed in the provided text for the ALPCO Calprotectin Chemiluminescence ELISA and ALPCO Easy Stool Extraction Device:
1. Table of Acceptance Criteria and Reported Device Performance
The document doesn't explicitly state "acceptance criteria" for all performance aspects in a unified table. However, based on the narrative, acceptance implies successful demonstration of performance within established guidelines (e.g., CLSI standards) and acceptable ranges. Here's a table summarizing the performance evaluation and implied acceptance:
| Performance Characteristic | Acceptance Criteria (Implied) | Reported Device Performance |
|---|---|---|
| Precision/Reproducibility | ||
| Within-run Precision (%CV) | Low (typ. |
§ 866.5180 Fecal calprotectin immunological test system.
(a)
Identification. A fecal calprotectin immunological test system is anin vitro diagnostic device that consists of reagents used to quantitatively measure, by immunochemical techniques, fecal calprotectin in human stool specimens. The device is intended forin vitro diagnostic use as an aid in the diagnosis of inflammatory bowel diseases (IBD), specifically Crohn's disease and ulcerative colitis, and as an aid in differentiation of IBD from irritable bowel syndrome.(b)
Classification. Class II (special controls). The special control for these devices is FDA's guidance document entitled “Class II Special Controls Guidance Document: Fecal Calprotectin Immunological Test Systems.” For the availability of this guidance document, see § 866.1(e).