evidence: The article is inaccurate — polymerase chain reaction (PCR) tests are among the most common and reliable ways to test for the coronavirus. Similar claims have circulated, and have been fact-checked, since March. There are three main coronavirus tests: diagnostic, antibody and antigen. Diagnostic tests, also known as PCR tests, look for the genetic material of the coronavirus in a sample that’s typically taken from a person’s nose or throat. Health care providers and public health officials use them to confirm whether someone has the disease. [...] Science Feedback, "PCR tests for COVID-19 are specific for the novel coronavirus SARS-CoV-2 and do not detect other coronaviruses, contrary to claims in viral article and video," April 6, 2020