ResourceClinical Diagnostics
Successive Proximity Extension Amplification Reaction (SPEAR) and its two-factor authentication mechanism
20 Jan 2026Successive Proximity Extension Amplification Reaction (SPEAR) is an innovative assay technology that enhances protein detection sensitivity using a unique two-factor authentication mechanism. By leveraging nucleic acid amplification, SPEAR minimizes background noise while maintaining high specificity. This wash-free, homogeneous format enables ultra-sensitive biomarker quantification for clinical and research applications, particularly in neurodegenerative disease detection.
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BiomarkersBiomarkers are biological markers which can be measured and evaluated to indicate a biological state. The use of biomarkers in research and diagnosis can indicate a normal or disease state or drug response of cells / tissues. Biomarkers include genetic markers, cell surface markers such as antigens, antibodies or receptors and secreted molecules such as cytokines. An assay system is required for identification of biomarkers. :ImmunoassayImmunoassays are laboratory tests that utilize antibody-antigen interactions to detect specific substances. They are widely used in diagnostics for detecting diseases, drug testing, and environmental monitoring. These assays offer rapid, sensitive, and precise detection of biomarkers, making them invaluable in clinical and research labs. Browse our peer-reviewed product directory to compare immunoassay systems, read user reviews, and get pricing directly from manufacturers.qPCRQuantitative PCR (qPCR) is a molecular biology technique used to amplify and measure the amount of a specific DNA or RNA target. It plays a crucial role in gene expression analysis, pathogen detection, and quantifying DNA or RNA in various applications. Real-time PCR provides precise, quantitative results and is widely used in research, diagnostics, and clinical studies. Browse our peer-reviewed product directory to find the best qPCR solutions; compare products, check reviews, and get pricing directly from manufacturers.Protein DetectionProtein detection techniques are essential for understanding protein expression, localization, and function. Methods such as western blotting, ELISA, and mass spectrometry are commonly used in research and diagnostics. Browse our peer-reviewed product directory to find the best tools for protein detection, compare products, check reviews, and get pricing directly from manufacturers.