Importance of Serological Test

After the onset of symptoms, the sensitivity of the positive PCR results showed higher than 90% from day 1 to day 3. However, it decreased below 80% and 50% on day 6 and day 14, respectively. The combination of PCR serological test increased the positive sensitivity by 47%

The serological test is required to check the presence of immune response to SARS-CoV-2

Important index to distinguish symptomatic and asymptomatic patient