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Sensors 2014, 14(5), 9132-9144; doi:10.3390/s140509132

A Compact Immunoassay Platform Based on a Multicapillary Glass Plate

Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minamiohsawa, Hachioji, Tokyo 192-0397, Japan
Author to whom correspondence should be addressed.
Received: 15 April 2014 / Revised: 15 May 2014 / Accepted: 20 May 2014 / Published: 23 May 2014
(This article belongs to the Section Biosensors)
View Full-Text   |   Download PDF [918 KB, uploaded 21 June 2014]   |  


A highly sensitive, rapid immunoassay performed in the multi-channels of a micro-well array consisting of a multicapillary glass plate (MCP) and a polydimethylsiloxane (PDMS) slide is described. The micro-dimensions and large surface area of the MCP permitted the diffusion distance to be decreased and the reaction efficiency to be increased. To confirm the concept of the method, human immunoglobulin A (h-IgA) was measured using both the proposed immunoassay system and the traditional 96-well plate method. The proposed method resulted in a 1/5-fold decrease of immunoassay time, and a 1/56-fold cut in reagent consumption with a 0.05 ng/mL of limit of detection (LOD) for IgA. The method was also applied to saliva samples obtained from healthy volunteers. The results correlated well to those obtained by the 96-well plate method. The method has the potential for use in disease diagnostic or on-site immunoassays. View Full-Text
Keywords: multicapillary glass plate; compact immunoassay; enzyme-linked immunosorbent assay multicapillary glass plate; compact immunoassay; enzyme-linked immunosorbent assay

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Xue, S.; Zeng, H.; Yang, J.; Nakajima, H.; Uchiyama, K. A Compact Immunoassay Platform Based on a Multicapillary Glass Plate. Sensors 2014, 14, 9132-9144.

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