ABSTRACT
Electrochemical genosensors for the detection of bacteria were
introduced about a decade ago. Miniaturization and advanced
microfabrication technology have made it compatible with bacteria
DNA diagnostic. This technology is cost effective, fast, and accurate.
The bioaffinity and biocatalysis reactions generate amperometric,
voltametric, impedimetric, or conductimetric signals on screen-
printed transducer chips (SPC), which is proportional to the number
of immobilized DNA copies on the SPC surface. Electrochemical
genosensor assays give quantitative rather than qualitative results.
Furthermore, the use of a hand-held portable reader makes this
assay suitable for use in the field, especially for point-of-care (POC)
tests at the patient bedside, during surveillance and environmental
studies of microorganisms.
