| Biomarker | What it measures | Research context |
|---|---|---|
| Calprotectin | Neutrophil-derived protein released during intestinal inflammation | The most extensively validated fecal marker of mucosal inflammation; elevated levels are associated with active IBD and Crohn's disease in numerous clinical studies |
| Lactoferrin | Antimicrobial protein released by activated neutrophils | Well-studied fecal inflammation marker; correlates with mucosal disease activity and is used in IBD research as a complement to calprotectin |
| Lysozyme | Antimicrobial enzyme secreted by neutrophils, macrophages, and Paneth cells | A marker of innate immune activation in the gut; elevated fecal levels reflect granulocyte and macrophage infiltration and have been studied alongside calprotectin and lactoferrin in the context of intestinal inflammation and IBD activity |
| Secretory IgA | Primary antibody mediating mucosal immune defense | Reflects the activity of the gut-associated immune system; studied in the context of mucosal immunity, gut dysbiosis, and immune suppression |
| Pancreatic Elastase | Protease secreted by the exocrine pancreas and measured in stool as a proxy for pancreatic output | A well-validated, non-invasive marker of exocrine pancreatic function; low fecal levels are associated with pancreatic exocrine insufficiency (PEI) and are used in research on maldigestion, chronic pancreatitis, and related conditions |
| Beta-Glucuronidase (Functional) | Bacterial enzyme activity reflecting microbial metabolism of glucuronide conjugates in the gut | Produced primarily by gut microbiota; elevated activity has been studied in the context of dysbiosis, estrogen recycling, colon cancer risk, and toxin reactivation from conjugated compounds |
| Occult Blood / Hemoglobin | Trace amounts of blood in stool not visible to the naked eye | A clinically established screening marker for gastrointestinal bleeding; detected via fecal immunochemical testing (FIT) and used extensively in colorectal cancer screening research and the evaluation of mucosal injury |
Suitable for standard stool-based protein biomarker analysis.
Compatible with Metabolomics
Standard stool collection into a stabilizing extraction buffer for protein immunoassays. The reference method for this panel. The EasySampler is included in the kit.
Compatible with Metabolomics
Additional validated collection approaches may be used depending on study design. Please contact our team to discuss sample handling options.
Samples are processed using validated handling and preparation workflows designed to preserve protein integrity for ELISA-based quantification.
When ordered together with metabolomics, results may also be paired with fecal SCFA profiles (butyrate, propionate, acetate), depending on the collection method and project setup.
ELISA (Enzyme-Linked Immunosorbent Assay) is a widely used analytical method for measuring the amount of specific proteins in biological samples. Antibodies bind selectively to a target protein, and the signal generated is proportional to its concentration. This allows for quantitative, reproducible measurement rather than a qualitative positive/negative result.
ELISA is the method behind clinically established fecal tests such as calprotectin measurement, which is a standard tool in gastroenterology research and clinical practice. The markers in this panel use the same analytical principle, applied to a broader set of gut health proteins.
All measurements are reported as concentrations against validated reference ranges. Results are intended to inform research interpretation and support conversations with qualified clinicians and do not constitute a clinical diagnosis.