Fig. 6From: Rapid assays of SARS-CoV-2 virus and noble biosensors by nanomaterialsCopyright 2022 Royal Society of ChemistrySchematics of a typical LIFA for COVID-19 diagnostics. a Components of a LIFA test kit. b Detection principles of Ag test and Ab tests. c Mechanisms for the functioning of LFIA. Reprinted with permission from ref 181. Back to article page