Specialists of the UK National Health Service called the main mistake, which is allowed when expressing testing to coronavirus. This is reported by the Edition Daily Express.
According to doctors, the false result may fail to fulfill the indications of the express test on COVID-19. In addition, such tests have a specific temporary window when the result is accurate. Before testing, it is necessary to disinfect your hands, and after taking a smear, do not keep it in a test tube, but to move circular movements by flask.
For the most reliable result, it is desirable to take a smear and from the nose, and from the throat, if there are no other instructions in the instructions for the test. However, if after the specified time, the dough appeared barely a noticeable line, then this is not considered a positive result, specialists emphasized.
Earlier, Russian doctors explained the incorrect results of PCR tests. According to them, it may turn out due to the error of health workers and improper storage and transportation of biomaterials. In addition, the test can show a positive result and in the absence of infection. This happens if the virus particles were on the mucous membrane, which in contact with the patient.