Latex-based Detection
Latex-based Detection - Related Videos
09:11
Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
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Cited by 32 •
2014
Latex agglutination testing is a simple, rapid and inexpensive method for serotyping Streptococcus pneumoniae, and has also been widely applied in diagnostic microbiology. This manuscript describes the in-house production of latex agglutination reagents, quality control procedures and the application of this technique to pneumococcal serotyping.
14:04
Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
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Cited by 17 •
2013
Lytic phage biosensors and antibody beads are able to discriminate between methicillin resistant (MRSA) and sensitive staphylococcus bacteria. The phages were immobilized by a Langmuir-Blodgett method onto a surface of a quartz crystal microbalance sensor and worked as broad range staphylococcus probes. Antibody beads recognize MRSA.
12:17
IP-FCM: Immunoprecipitation Detected by Flow Cytometry
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Cited by 16 •
2010
The IP-FCM method is presented, which allows a sensitive, robust, biochemical assessment of native protein-protein interactions, without requiring genetic engineering or large sample sizes.
06:07
Building Double-decker Traps for Early Detection of Emerald Ash Borer
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Cited by 10 •
2017
Effective traps to attract and capture the emerald ash borer (EAB) are a key element of detecting and managing this invasive pest. Double-decker traps, placed in full sun near ash trees, incorporate visual and olfactory cues and were more likely to capture EAB than other trap designs in field trials.
09:10
Combination of Adhesive-tape-based Sampling and Fluorescence in situ Hybridization for Rapid Detection of Salmonella on Fresh Produce
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Cited by 17 •
2010
This protocol describes a simple adhesive-tape-based approach for sampling of tomato and other fresh produce surfaces, followed by rapid whole cell detection of Salmonella using fluorescence in situ hybridization (FISH).
FAQs
Visible agglutination results from immune binding that cross-links coated latex particles. If the sample contains the matching antigen or antibody, those interactions bring particles together into clumps that can be seen. Without the relevant match, this specific cross-linking signal is not expected. Thus, the particle reaction translates target recognition into a rapid visual readout.
The attached antibody or antigen provides the recognition element, so reagent design determines which biological target can participate in binding. Antibody-coated particles support detection of a matching antigen, whereas antigen-coated particles support detection of a matching antibody. This design choice connects the assay format to either microbial-target detection or identification of pathogen-specific immune responses.
The observed degree of clumping can serve as more than a simple positive-or-negative signal. Investigators may use the visible reaction for qualitative evidence, such as noting whether the target is detected, or for semi-quantitative evidence based on the degree of agglutination. This makes the readout useful when rapid target assessment is more important than extensive instrumentation.
Sample quality matters because the reaction depends on reliable contact between the specimen and the coated particles. A compromised or unsuitable sample can reduce confidence in the observed binding pattern, even when the reagent design is appropriate. For infection testing, attention to specimen quality therefore supports more dependable interpretation of antigen or antibody detection.
At a basic level, the procedure brings the clinical or biological sample into contact with antibody- or antigen-coated latex particles. The mixture is then examined for visible agglutination, and the observed degree of clumping is interpreted as qualitative or semi-quantitative evidence. This workflow allows target screening without relying on extensive instrumentation.
Latex-based detection can address both sides of an infection-related immune question. It may detect microbial antigens directly in clinical specimens, or identify pathogen-specific antibodies produced in response to infection. The same general format can therefore support pathogen screening and infection surveillance, depending on whether the particles carry antibodies or antigens.
Latex-based Detection is especially useful when results must be obtained rapidly with limited instrumentation. Its practical format supports routine testing and screening in resource-limited settings, where access to extensive laboratory equipment may be restricted. In infection surveillance, the method can provide timely evidence of microbial antigens or pathogen-specific antibodies, helping investigators monitor target presence or immune response.