The important way to confirm the diagnosis of new pneumonia is with the results of nucleic acid testing, which is done by RTPCR, or reverse transcription polymerase chain reaction, which is by far the guideline for conducting nucleic acid testing for new coronaviruses, and is the current method of conducting nucleic acid testing for new coronaviruses, and is the way to confirm the diagnosis. It consists of at least two steps, the first step is to extract the viral RNA, and if there is virus in the sample, RTPCR, or polymerase chain reaction, is performed to amplify the genes to see if there is viral RNA in the sample, and it is also the most commonly used way of confirming a positive diagnosis. If the test is negative, it is not possible to rule out that it is not a novel coronavirus pneumonia infection, as the sensitivity of different kits, possible contamination, or quality control can cause problems, resulting in false-negative results. If the test is negative, the clinical diagnosis will depend on the patient’s clinical presentation and CT imaging. Source: Dr. Yurai