ASO Testing Services
Group A Streptococcus (GAS) is a major pathogen responsible for a wide range of infections. During the infection process, GAS secretes a highly immunogenic toxin known as Streptolysin O. In defense, the host's immune system produces specific antibodies against this toxin, known as Anti-Streptolysin O (ASO) antibodies.
In biomedical and infectious disease basic research, ASO antibody levels serve as a critical serological biomarker for assessing recent GAS exposure. Biochemical mechanism studies indicate that ASO antibody levels typically begin to rise significantly 1 to 2 weeks post-infection, peak at 3 to 6 weeks, and can remain elevated for several months.
Crucially, because baseline ASO levels vary among different biological individuals or population cohorts, the dynamic changes in ASO levels (e.g., a significant rise or fall in titers between paired serum samples) often hold greater analytical value for research than a single absolute ASO measurement. Precise dynamic monitoring of ASO is indispensable for building infection tracking models and investigating the pathogenesis of post-streptococcal autoimmune responses.
Our Services
We offer comprehensive and flexible ASO serological analysis solutions. Our core objective is the precise quantitative or semi-quantitative measurement of ASO antibody titers and concentrations in research serum or plasma samples.
To meet diverse project needs—from high-throughput biobank screening to rapid laboratory triage—we provide services based on the following core analytical platforms:
- Turbidimetry / Nephelometry: Utilizing the principle of altered light transmittance caused by antigen-antibody immune complexes, this method provides fully automated quantitative analysis. With exceptional sensitivity and a broad linear range, it is the mainstream choice for high-throughput, high-precision ASO quantification in animal models or large longitudinal cohorts.
- Enzyme-Linked Immunosorbent Assay (ELISA): A classic, high-sensitivity immunoassay platform. It supports parallel microplate testing for large sample batches and can precisely capture trace ASO antibody signals. This method is highly ideal for in-depth serological epidemiological investigations and research-grade biomarker quantification.
- Agglutination: Including traditional latex agglutination tests. By observing the formation of agglutinated particles visually or via instruments, it rapidly provides semi-quantitative titers or qualitative results. Suitable for preliminary research screening projects that require moderate sensitivity and a quick determination of the antibody titer range.
- Colloidal Gold Immunochromatography: Employing lateral flow technology, this method is simple to operate and delivers extremely fast results. It is highly suitable for early qualitative screening in remote field sampling sites or research settings, facilitating the rapid triage of target sample groups.
Our Advantages
- Comprehensive Technology Platforms: From gold-standard ELISA quantification to rapid qualitative chromatography, we offer diverse technology combinations to perfectly match your project budget and data precision requirements.
- Focus on Dynamic Monitoring Models: Our data reporting system is specifically optimized to track trajectories across multiple time points for the same experimental subject (e.g., animal models or long-term follow-up cohorts), clearly illustrating titer decay or escalation curves to maximize biological relevance.
- Strict Research Quality Control: We implement rigorous standard calibration and inter-assay variation (CV) controls across all platforms, ensuring the absolute stability and reproducibility of results. Our data meets the high publication standards of top-tier academic journals.
- Broad Sample Compatibility: Our validated extraction and analysis workflows seamlessly accommodate various routine biological research samples, effectively eliminating matrix interferences such as lipemia or hemolysis.
Workflow
Our senior technical experts will discuss your research objectives (e.g., vaccine efficacy evaluation, cohort tracking) and assist you in selecting the most appropriate assay combination.
We provide standardized guidelines for the collection and pre-treatment of research serum/plasma samples. Your R&D team ships the samples to our central laboratory via compliant cold-chain logistics.
Upon strict sample accessioning, testing is performed in our climate-controlled laboratories by specialized technicians following SOPs.
We deliver a professional research report containing specific titer/concentration values, baseline signal comparisons, and dynamic change modeling charts.
At the forefront of research exploring Group A Streptococcus infection mechanisms and severe autoimmune triggers, precise and reliable serological data is an indispensable cornerstone. We look forward to becoming your trusted academic research partner with our exceptional testing platforms and rigorous scientific approach. Contact our technical experts today to discuss your ASO testing needs, and let us safeguard your research projects with high-standard data!
