The Association for Molecular Pathology (AMP), Infectious Diseases Society of America (IDSA), and Pan American Society for Clinical Virology (PASCV) released recommendations for sequencing and identifying SARS-CoV-2 variants in clinical specimens.
In the document, the three organizations discuss sequencing and identification of viral variants, when to use next generation sequencing (NGS) of SARS-CoV-2 variants, and which samples to use for NGS.
A related document provides a list of laboratories offering SARS-CoV-2 variant testing.