Preventive Genomics • Endotoxin Biomarker

STOOL LPS TEST

Understand Gut-Derived Endotoxin Burden and Microbial Balance

Lipopolysaccharides (LPS), also known as bacterial endotoxins, are structural components of the outer membrane of Gram-negative bacteria. The Stool LPS Test assesses endotoxin concentrations in a stool sample, providing valuable insights into gut-derived endotoxin burden and the intestinal microbial environment.

Book / Inquire Test Test Specifications

Endotoxin LPS

Primary Biomarker

Gram- Bacteria

Membrane Component

Quantitative Assay

Validated Laboratory

Microbial Balance

Immune Interaction

Biological Foundation

What is LPS (Lipopolysaccharide)?

Structural components of bacterial outer membranes that serve as primary mediators between the gut microbiome and systemic immunity.

Bacterial Origin & Shedding

Lipopolysaccharides (LPS), also known as endotoxins, are large molecules consisting of a lipid and a polysaccharide. They are structural components of the outer membrane of Gram-negative bacteria and are naturally released into the gut lumen as bacteria multiply, undergo normal cell division, or break down.

Intestinal Confinement vs. Leakage

Under normal, healthy conditions, bacterial endotoxins remain largely contained within the intestinal environment by an intact mucosal barrier. However, changes in gut microbial balance and impaired intestinal barrier function may allow increased exposure to LPS, triggering immune responses and low-grade inflammation.

Clinical Significance

Why is the LPS Test Important?

LPS plays a pivotal role in interactions between gut microbes and the host immune system.

Immune Activation

Increased exposure to bacterial endotoxins interacts with TLR4 receptors on mucosal immune cells, triggering chronic pro-inflammatory signaling cascades.

Metabolic Disturbances

Elevated endotoxin burden has been closely linked with metabolic health challenges, including insulin resistance, chronic adiposity, and metabolic endotoxemia.

Gut Health Triad

Stool LPS assessment directly complements broader investigations into gut health, microbial balance, and intestinal barrier permeability when paired with zonulin.

Clinical Scope

What Does the Test Help Assess?

Quantitative insights into the bacterial endotoxin load and gut microenvironment.

LPS Concentrations

Accurate quantification of lipopolysaccharide levels present in the intestinal environment.

Endotoxin Burden

Measures the total gut-derived bacterial endotoxin pressure on the mucosal barrier.

Microbial Imbalance

Identifies shifts toward pro-inflammatory Gram-negative bacteria in the microbiome.

Multi-Biomarker Synthesis

Evaluates gut health holistically when paired alongside zonulin and inflammatory markers.

Clinical Indications

Who May Consider the Test?

The Stool LPS Test may be considered as part of a broader gut-health assessment for individuals experiencing or being evaluated for:

Persistent Bloating

Ongoing bloating, gas, fullness, and digestive discomfort after meals.

Suspected Microbiome Imbalance

Individuals with dysbiosis concerns following diet changes, travel, or antibiotic therapy.

Gastrointestinal Inflammation

Ongoing mucosal irritation, gut hyperreactivity, and inflammatory bowel concerns.

Metabolic Challenges

Individuals evaluated for obesity, insulin resistance, or metabolic syndrome.

Immune & Fatigue Symptoms

Systemic low-grade inflammation, brain fog, or persistent fatigue linked to gut health.

Microbial Interaction Studies

Conditions where gut microbial and inflammatory interactions are being clinically investigated.

Laboratory Specifications

Test Methodology & Details

Rigorous laboratory protocols ensuring high sensitivity and clinical-grade reporting.

Parameter	Details
Test Name	Stool LPS Test
Sample Type	Stool (Hygienic collection kit supplied)
Biomarker	Lipopolysaccharides (LPS / Endotoxins)
Methodology	As per validated laboratory assay
Clinical Assessment	Measurement of bacterial outer membrane endotoxin burden in stool
Report	Quantitative result with assay-specific reference interval and clinical notes

Progenics Excellence

Why Choose Progenics Laboratories?

Specialized laboratory infrastructure providing actionable diagnostic clarity.

Advanced Biomarker Assessment

Dedicated profiling targeting lipopolysaccharide endotoxin burden in intestinal samples.

Quantitative Laboratory Analysis

Precise quantitative reporting benchmarking your results against validated clinical intervals.

Microbial Activity Insights

Reveals functional bacterial dynamics and endotoxin shedding beyond static culture methods.

Comprehensive Gut Synergy

Engineered to seamlessly complement GutGenics metagenomics and Stool Zonulin barrier tests.

Comprehensive Multi-Marker Axis

Complement Your GutGenics™ Assessment

GutGenics + Stool LPS + Stool Zonulin: Each assessment explores a different dimension of gut health. Together, these tests provide comprehensive, complementary information about the gut microbiome, endotoxin burden, and intestinal barrier regulation.

GutGenics™

Explores gut microbial composition, bacterial diversity, and community balance via high-depth DNA sequencing.

Explore GutGenics →

Stool SCFA Test

Measures beneficial microbial fermentation metabolites—Acetate, Propionate, and Butyrate.

Explore Stool SCFA →

Clinical Flyer • Patient Reference

Clinical Brochure Overview

Print or save this consolidated laboratory reference sheet for clinical review or patient files.

Flyer / Brochure Quick Reference

PROGENICS LABORATORIES

Advanced Testing • Personalised Health Insights

Test Overview

Test Name: Stool LPS Test (Lipopolysaccharide)
Target: Gut-derived bacterial endotoxin burden
Specimen: Stool sample in clean transport container
Methodology: Validated quantitative laboratory assay

Clinical Relevance

Evaluation of persistent bloating and gastrointestinal discomfort
Detection of high Gram-negative bacterial membrane shedding
Investigation of systemic low-grade inflammation & metabolic concerns
Supports personalized gut restoration protocols

Biological Mechanisms

Gram-Negative Outer Membrane: LPS structural release upon bacterial turnover
TLR4 Receptor Activation: Triggers mucosal immune cascade
Metabolic Endotoxemia: Leakage through compromised tight junctions

Multi-Test Triad

GutGenics: Microbial composition and diversity
Stool LPS: Bacterial endotoxin load
Stool Zonulin: Intestinal barrier integrity

FAQ

Frequently Asked Questions

Key answers regarding lipopolysaccharide testing and clinical interpretation.

Measuring lipopolysaccharides in stool provides a direct assessment of the endotoxin pool present within the intestinal lumen. Elevated levels indicate a high burden of Gram-negative bacterial breakdown, which can challenge the mucosal barrier and stimulate local and systemic immune responses.

LPS measures the bacterial endotoxin load (the inflammatory irritant), while Zonulin measures tight junction regulation (the integrity of the intestinal gate). When both are evaluated together, clinicians can see whether high endotoxin levels are accompanied by compromised barrier function.

High-saturated-fat diets, refined sugars, alcohol, and low-fiber intake have been shown to favor Gram-negative bacterial overgrowth and enhance endotoxin translocation. Increasing dietary polyphenols, soluble fibers, and beneficial probiotics can help lower endotoxin burden.

Understand Your Gut Endotoxin Burden

Order your Stool LPS Test kit today or speak with our clinical team to gain clear, scientific insights into your gut microbial activity and systemic health.

Schedule Clinical Consultation Call +91 89777 51239