The SPEAR UltraDetect™ Parallel Plex Solution enables simultaneous biomarker detection without sacrificing analytical performance.
The parallel plex approach, which leverages the platform's low sample-volume requirements and automated procedures, enables simultaneous, independent measurement of up to 4 biomarkers from a single small-volume plasma aliquot.
This article shows the interchangeable ultraperformance quantification of pTau 217, pTau 231, NF-L, and GFAP on the SPEAR UltraDetect™ platform using singleplex and parallel 4-plex processes.
Two investigations were conducted to assess performance equivalence: one using a fabricated sample set composed of healthy plasma and assay calibrators, and the other utilizing commercially supplied plasma samples from a cohort of supposedly healthy and Alzheimer's disease (AD) patients.
Across all experiments, the parallel 4-plex procedure yielded quantitative data that were highly consistent with the singleplex format, with comparable precision and fold separation between disease and healthy control groups.
These findings suggest that the SPEAR UltraDetect™ parallel plex approach is an efficient and scalable solution for multibiomarker analysis in research applications.
The SPEAR UltraDetect™ Parallel Plex Solution allows researchers to assess numerous biomarkers simultaneously with singleplex-grade sensitivity, specificity, and precision, using a single small-volume sample aliquot.
In addition, the parallel plex approach allows for the simultaneous investigation of closely related biomarkers, such as multiple Tau or pTau species, which cannot be detected together with traditional multiplex immunoassays.
Introduction
As neurological research moves toward multianalyte profiling, there is a growing need for high-performance, efficient technologies that can quantify many biomarkers from small sample quantities.
Conventional multiplex immunoassays sometimes include trade-offs between sensitivity, specificity, and interanalyte interference, which limits their usefulness in sensitive biomarker research.
The SPEAR UltraDetect™ Parallel Plex Solution addresses these problems by allowing simultaneous and independent measurement of several biomarkers, while maintaining the precision and specificity of a singleplex test.
The method necessitates a sample volume tens to hundreds of times less than that employed on other platforms. Spear Bio’s parallel plex solution, based on the SPEAR UltraDetect™ platform's automated process and homogeneous immunoassay chemistry, enables researchers to
- Detect up to four biomarkers simultaneously from a single sample aliquot.
- Maintain singleplex analytical performance without cross-reactivity.
- Minimize sample consumption.
- Improve data generation with automated processes and scalable throughput.
The SPEAR UltraDetect™ Parallel Plex solution works with existing SPEAR UltraDetect™ assay kits and the SPEAR Reaction Kit to analyze multiple biomarkers simultaneously in 96- or 384-well plates.
This article introduces the parallel plex process concept (Figure 1) and demonstrates its analytical equivalence to normal singleplex workflows on the SPEAR UltraDetect™ platform. It quantifies four essential biomarkers implicated in neurological research: pTau 231, pTau 217, NF-L, and GFAP.
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About Spear Bio
Spear Bio is an innovative leader in providing scalable solutions for ultra-sensitive protein biomarker measurements. Spear Bio’s proprietary technology, Successive Proximity Extension Amplification Reaction (SPEAR), employs a unique 2-factor authentication mechanism to precisely measure protein biomarkers at attomolar level from sub-microliter sample volume. Spear Bio is focused on leveraging its technology’s unprecedented sensitivity to transform protein research and early disease diagnosis.
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