There are several types of serological tests intended to detect different types of viruses. They also differ in determining the concentration of antibodies, i.e. quantitative and qualitative. A serological test can be performed at any time, except in the phase of acute infection (when one or more of the following symptoms are present: fever, chills, cough, cold or flu-like condition) a period in which, from the Synlab laboratory, where all these analyzes are performed, recommend that the protocols prescribed by the Ministry of Health be followed and that an appropriate PCR swab test be performed.
The PCR test is the standard method for replicating and proving the presence of a specific gene in this case SARS-CoV-2-specific N-gene. A sample to prove the virus through a swab taken from the patient’s nose and throat. The PCR test is practically 100% specific (does not detect any virus other than the one being tested) and has a high clinical sensitivity. Of course, the result obtained is also affected by the stage of infection in which the swabs are taken.