The Anatomy of a Nonfaradaic Electrochemical Biosensor. (February 2018)

• Record Type: Journal Article
• Authors: Stevenson, Hunter; Radha Shanmugam, Nandhinee; Paneer Selvam, Anjan; Prasad, Shalini
• Is Part Of: SLAS technology. Volume 23:Number 1(2018)
• Page Start: 5
• Page End: 15
• Publication Date: 2018-02
• Subjects: affinity biosensor -- COMSOL modeling -- gold electrodes -- sensor design; Medical laboratory technology -- Periodicals; Laboratories -- Equipment and supplies -- Periodicals; Diagnosis, Laboratory -- Periodicals; 616.075
• DOI: 10.1177/2472630317738700
• Languages: English
• ISSNs: 2472-6303

Abstract

Point-of-care (POC) testing has revolutionized diagnostic healthcare, bringing medical results directly and immediately to the patient. With faster diagnostics, more immediate clinical management decisions can be made. POC tests most often use a dipstick or swab format to detect the presence of a pathogen, disease, or other relevant biomarker. In these formats, the POC tests eliminate the need for complex lab equipment and trained personnel to collect, process, and analyze sample data for simple diagnostics. However, these tests cannot satisfy all clinical needs, because accurate quantitative results are needed. The present study serves as a template for designing a nonfaradaic electrochemical biosensor toward quantitative POC diagnostics. We focus on investigating the most important parameters when constructing a nonfaradaic biosensor through both mathematical modeling and electrochemical measurements. Furthermore, we demonstrate quantitative affinity biosensing of a model protein toward developing a POC device.