Cotton Swab Test
Cotton Swab Test - Related Videos
05:40
Fabricating Cotton Analytical Devices
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2016
To investigate simple fabrication approaches for multiple assay needs, we created a fluid-absorbing channel system made of cotton material. This device was used to establish a multiple detection platform, and solve contamination issues that commonly affect lateral flow-based biomedical devices, for clinical urinalysis of nitrite, total protein, and urobilinogen.
02:34
Quantification of Group B Streptococcus Load in the Mouse Vaginal Lumen via Swabbing and Chromogenic Culture
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2026
Source: Patras, K. A. & Doran, K. S. A Murine Model of Group B Streptococcus Vaginal Colonization. J. Vis. Exp. (2016)This video demonstrates the quantification of vaginal Group B Streptococcus (GBS) load in a mouse model using swabbing and chromogenic culture. It outlines the steps involved in sample collection, plating, and colony counting to quantify GBS load in the mouse vaginal lumen.
10:03
Swab Sampling Method for the Detection of Human Norovirus on Surfaces
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Cited by 40 •
2017
A macrofoam based sampling methodology was developed and evaluated for the detection and quantification of norovirus on environmental hard surfaces.
04:45
Swab-based Conjunctival Commensal Bacteria Isolation: A Technique to Isolate Commensal Bacteria from Conjunctiva of Murine Model
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2025
This video describes a swab-based technique to isolate viable commensal bacteria from the ocular conjunctiva. The technique can be used to profile the commensal bacterial microbiome of the conjunctiva, which plays a defensive role against pathogens.
10:18
Agrobacterium-Mediated Virus-Induced Gene Silencing Assay In Cotton
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Cited by 159 •
2011
We present the detailed protocol for Agrobacterium-mediated virus-induced gene silencing (VIGS) assay in cotton. The tobacco rattle virus (TRV)-derived VIGS vectors were deployed to induce RNA silencing of cotton GrCLA1, Cloroplastos alterados 1 gene. The albino phenotype caused by silencing GrCLA1 was observed at the seedling stage within 2 weeks after inoculation.
FAQs
The laboratory pathway determines what information the specimen can provide. A swab sample may be cultured, examined for an antigen, or processed with nucleic acid amplification, so the selected test system must match the intended analysis. This flexibility allows the same sampling approach to support identification of infections, while the laboratory method determines the resulting type of evidence.
Site selection controls whether the collected material represents the suspected condition. Throat, nose, skin, and genital tract samples are not interchangeable because each targets a different body location and potential source of cells, secretions, or microorganisms. Choosing the appropriate site therefore affects the relevance of the specimen and helps clinicians interpret a result in its medical context.
Timing and handling affect whether a specimen remains suitable for analysis. Collection should occur at an appropriate time for the clinical question, and the swab must be handled according to the intended test pathway. Poor handling or an inadequately collected sample can lead to an inconclusive or misleading result, limiting decisions based on the test.
First, identify the targeted body site and use a sterile swab. Rotate it against the selected surface to collect the required cells, secretions, or microorganisms. The swab is then placed in transport medium or applied directly to a test system, depending on the planned analysis. These steps connect collection with appropriate laboratory processing.
Transport medium provides the designated pathway for a specimen after collection, whereas some samples are applied directly to a test system. The choice depends on the analysis that will follow and the way the laboratory receives the material. Correct placement supports the intended workflow; incorrect handling can compromise interpretation or produce an inconclusive result.
They are useful when clinicians need a sample from a defined body site to investigate a possible infection, support treatment decisions, or monitor disease transmission. The result may identify infection-related material through culture, antigen detection, or nucleic acid amplification. Because interpretation depends on collection quality, the test is most informative when site, timing, technique, and handling are appropriate.