RT-PCR infographic (image) Howard Hughes Medical Institute Share Print E-Mail Caption Scientists have designed several testing methods to spot SARS-CoV-2 RNA. The method used in almost all testing to date and considered the "gold standard" relies on a technique for amplifying tiny amounts of viral genes. Credit Howard Hughes Medical Institute Usage Restrictions Must use credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.