What's the difference between RT-PCR and PCR test? Atlys Customer Delight December 24, 2021 02:52 Updated In short - none. RT-PCR and PCR have almost the same levels of significance, and either one is accepted. You can learn more about how does the test work technically here. Related articles Why do I only see a few countries on my app? How do I add an additional member? Can I use Atlys if I'm not a US citizen? Is Atlys safe? Comments 0 comments Please sign in to leave a comment.