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Simultaneous Detection of Different Antibody Classes in a Multiplexed Serological Test

Simultaneous Detection of Different Antibody Classes in a Multiplexed Serological Test

Published on: July 14, 2023

Comparison of multiplex immunoassay platforms.

Qin Fu¹, Jie Zhu, Jennifer E Van Eyk

¹Departments of Medicine, Biomedical Engineering, Biological Chemistry, Bayview Proteomics Center, Johns Hopkins University, Baltimore, MD 21224, USA. qfu1@jhmi.edu

Clinical Chemistry

|December 22, 2009

Summary

Multiplex immunoassays are crucial for validating biomarkers. The MULTI-ARRAY and Bio-Plex systems demonstrated superior performance for serum biomarker analysis and validation.

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Area of Science:

Biomarker discovery and validation
Proteomics and Immunoassays
High-throughput analysis

Background:

Rigorous validation of candidate biomarkers is essential.
High-throughput proteomic techniques generate numerous potential biomarkers.
Multiplex immunoassays offer a solution for simultaneous quantitative assessment of multiple biomarkers, reducing sample and reagent requirements compared to ELISA.

Purpose of the Study:

To evaluate the suitability of commercially available multiplex immunoassays for serum biomarker analysis and validation.
To assess key performance metrics including reproducibility, reliability, robustness, accuracy, and throughput.

Main Methods:

Five representative high-throughput immunoassay platforms were selected: MULTI-ARRAY, Bio-Plex, A(2), FAST Quant, and FlowCytomix.
Assays were performed following manufacturer protocols with provided reagents.

Main Results:

Quantifiable intervals were determined based on precision (CV < 25%) and percentage recovery (within 20%).
MULTI-ARRAY and Bio-Plex assays exhibited the best performance, characterized by the lowest limits of detection.
The MULTI-ARRAY system demonstrated the most linear signal output across the widest concentration range (10^5 to 10^6).

Conclusions:

The MULTI-ARRAY and Bio-Plex multiplex immunoassay systems are highly suitable for biomarker analysis and quantification.
These platforms offer advantages in terms of sensitivity and dynamic range for serum biomarker validation.