This product with be discontinued and withdrawn from the NIBSC catalogue on Monday 13th May 2024.CE marked for use as an IVD within the UK, EU member states and EEA countries. In all other territories this product can be used for research purposes only” Product 20/110 comprises 4 synthetic constructs of the SARS-CoV-2 Vic 1 virus Customers are strongly encouraged to use product 20/170 instead as this contains full length SARS-CoV-2 Vic 1 virus and is therefore more representative of a patient sample