Covid Test: learn how distinguish

Molecular tests: test that highlights the presence of genetic material (RNA) of the virus. It is currently the most reliable test for diagnosing coronavirus infection. It is performed on a sample taken with a nasal / oral-pharyngeal swab and then analyzed by molecular methods of RT-PCR in real time (Reverse Transcription-Polymerase Chain Reaction) for the amplification of the viral genes most expressed during the infection. The analysis can only be carried out in highly specialized laboratories, identified by the health authorities. The molecular test result is available within 72 hours.

Rapid antigen test: this type of test is based on the search for viral proteins (antigens). The collection method is similar to that of the molecular and the response is very short (about 15 minutes) but the sensitivity and specificity of this test, following a validation carried out on samples stored at -80 ° C, seem to be lower than those of the molecular test. This involves the possibility of false-negative results in the presence of low viral load (tC> 25), as well as the mandatory need to confirm positive results with a molecular swab. 

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