Label-free detection of SARS-CoV-2 neutralizing antibodies in human serum by Bloch surface waves on 1D photonic crystal biochips

We propose a rapid serologic test based on disposable nano-photonic biochips for SARS-CoV-2 related antibodies. The label-free sensograms showed that positive and negative human serum samples were discriminated, enabling real-time and fast label-free detection.