Colds and coughs can usually do nucleic acid testing. 1. Nucleic acid test is to analyze the DNA and RNA of bacteria and viruses in the specimen, which ultimately helps to identify the pathogens infecting the patient. 2. Because the DNA and RNA of each virus and bacterium are unique, nucleic acid testing is often used as a diagnostic basis for diseases caused by viruses and bacteria. Because of this, a common cold and cough will not affect the results of the new coronavirus nucleic acid test, and there is no need to worry about false-positive results. When you have a cold, your body’s immunity is low, so you should wear a good mask, keep a distance, and sterilize the test diligently. If the cold and cough are severe, you should go to the hospital in time.