See RT-PCR and immunoassay kits for COVID-19 diagnosis, disease prognosis, monitoring, and clinical research from Biovendor at
BioVendor website: https://www.biovendor.com/covid19
Reagents, namely SARS-CoV-2 recombinant proteins are intended for research, assay development and manufacturing.
TestLine Clinical Diagnostics
Apart from standard methods such as ELISA and BLOT, Testline also offers multiplex tests which are becoming increasingly in demand.