Stool Sample Analysis
Stool Sample Analysis - Related Videos
04:57
Comparative Analysis of Automatic Fecal Analyzer versus Direct Wet Smear Microscopy for Detecting Parasitic Infections in Stool Samples
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2025
Parasitic infections pose a significant public health challenge, especially in developing countries and regions. This study compares an Automatic Fecal Analyzer to assess its diagnostic efficacy with that of the traditional Direct Wet Smear Microscopy method.
15:16
Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR
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Cited by 13 •
2012
A One-Step RT-PCR assay for detection and genogroup identification of Norovirus isolates from children’s stools, that utilizes primers and TaqMan probes specific to the open reading frame 1 (ORF1)-ORF2 junction region, the most conserved region of the Norovirus genome is described. A non-commercial, cost-effective RNA extraction method is detailed.
03:46
Stool Microbial DNA Isolation: Studying the Effect of Environmental Enrichment on Microbiome Diversity in Murine Tumor Model
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2023
This video describes DNA isolation protocol from stool samples of colon tumor-bearing mice. The extracted DNA is amplified using PCR, and the product is further cleaned using a magnetic beads-based approach. This method can be used to determine the effect of environmental enrichment on colon microbiota and animal mortality.
10:16
Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Cited by 186 •
2016
The protocol below describes the methodology for: microplastics sampling on the sea surface, separation of microplastic and chemical identification of particles. This protocol is in line with the recommendations for microplastics monitoring published by the MSFD Technical Subgroup on Marine Litter.
10:41
Carbon and Nitrogen Analysis of Environmental Samples
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Elemental Analysis is a method used to determine elemental composition of a material. In environmental samples such as soils, scientists are particularly interested in the amounts of two ecologically important elements, nitrogen and carbon. Elemental analysis by the flash combustion technique works by oxidizing the sample with a catalyst through combustion in a high-temperature chamber. The products of combustion are...
FAQs
The laboratory approach depends on the abnormality clinicians need to investigate. A suspected infection may require microbiological testing, whereas unexplained bleeding, possible parasites, inflammation, or impaired digestion may call for chemical assays or microscopic examination. This targeted selection makes the results more relevant to the patient’s symptoms and helps determine whether further evaluation is necessary.
Visual inspection can identify notable changes in the specimen, while chemical assays can detect substances such as blood. Microscopic examination supports the search for parasites or other cellular abnormalities, and microbiological methods assess disease-causing pathogens. Because each approach reveals different evidence, combining methods can provide a broader assessment of gastrointestinal abnormalities.
A laboratory result is most useful when matched to the symptom or disease being evaluated. Findings may support an explanation for diarrhea, abdominal pain, unexplained bleeding, malabsorption, inflammatory bowel disease, or another gastrointestinal problem. Clinicians use that context to judge whether the result guides treatment, helps monitor disease activity, or warrants additional diagnostic testing.
The laboratory first examines the submitted fecal material using the methods appropriate to the clinical question. Evaluation may include visual inspection followed by chemical, microscopic, or microbiological testing. The resulting observations and detected abnormalities are then considered in relation to the patient’s presentation, producing information that can support diagnosis, treatment decisions, or follow-up investigation.
Stool testing can contribute to the evaluation of diarrhea, abdominal pain, and unexplained bleeding, particularly when clinicians are investigating infection, parasites, altered digestive function, inflammation, or colorectal conditions. The selected analysis depends on the suspected problem. Results can narrow the diagnostic possibilities and help determine whether treatment or additional testing should follow.
Findings may help clinicians identify a gastrointestinal infection, recognize evidence consistent with malabsorption or inflammatory bowel disease, or investigate colorectal abnormalities. That information can guide treatment decisions and provide a reference for monitoring disease activity over time. If the results do not fully explain the presentation, they can also support a decision to pursue additional diagnostic testing.