November 2025
Gastrointestinal Health and Infection Diagnostic Solutions
Gastrointestinal health is a critical factor influencing overall human well-being. Digestive diseases such as Inflammatory Bowel Disease (IBD), Colorectal Cancer (CRC), and Helicobacter pylori infection, if not diagnosed and managed promptly, can significantly impact patients' quality of life. Statistics indicate that colorectal cancer is the third most common cancer globally, while H. pylori infection affects approximately half of the world's population.

Diagnostic Biomarkers for Gastrointestinal Inflammation and Infection
Modern diagnostic medicine utilizes specific biomarkers to provide accurate, non-invasive testing solutions for gastrointestinal inflammatory and infectious diseases. These biomarkers facilitate early screening, disease activity assessment, and treatment efficacy monitoring.
Detailed Overview of Core Diagnostic Biomarkers
Calprotectin
Calprotectin is a key protein complex abundant in neutrophils, serving as a highly sensitive and specific biomarker for assessing intestinal inflammation.
Clinical Applications:
Guideline-recommended marker for screening Inflammatory Bowel Disease (IBD)
Evaluating IBD activity for optimized disease management
An indicator for certain inflammatory conditions
Fecal Occult Blood Test (FOBT)
The Fecal Occult Blood Test is a simple, non-invasive diagnostic tool designed to detect hidden (occult) blood in stool samples—blood not visible to the naked eye—which often indicates underlying gastrointestinal abnormalities.
Clinical Applications:
Early-stage Colorectal Cancer (CRC) screening
Evaluating gastrointestinal bleeding of unknown origin
Routine examination for gastrointestinal disorders
Helicobacter pylori Detection
H. pylori Antigen Test
This test identifies specific bacterial antigens in stool samples, making it ideal for detecting active infections.
H. pylori Antibody Test
This test detects antibodies (IgG, IgM, IgA) produced by the immune system in response to past or present H. pylori exposure, providing historical infection data.
Clinical Applications:
Aiding in the diagnosis of H. pylori-related disorders
Guiding antibiotic treatment decisions
Monitoring post-therapy eradication success

Clinical Application Guidelines
|
Test Parameter |
Primary Use |
Application Scenarios |
|
Calprotectin |
Intestinal inflammation assessment |
IBD screening and monitoring, inflammatory disease differentiation |
|
Fecal Occult Blood |
GI bleeding screening |
Early CRC screening, GI bleeding localization |
|
H. pylori Antigen |
Active infection diagnosis |
Dyspepsia etiology investigation, pre-treatment evaluation |
|
H. pylori Antibody |
Infection history assessment |
Epidemiological studies, immune response monitoring |
Reference
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