The variant controls consist of synthetic RNA transcripts of the respective variant SARS-CoV-2 S genes in a matrix simulating transport media. The products also contain human genomic DNA for internal control needs, which enables laboratories to monitor the entire process of a molecular assay, including extraction, amplification, and detection.
The SARS-CoV-2 alpha, beta, gamma, and epsilon variant S genes and human gDNA are internally targeted to 200,000 copies/mL and 75,000 copies/mL, respectively, using Bio-Rad Droplet Digital PCR to ensure lot-to-lot consistency.
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