Antigen Test detects the nucleoprotein of novel coronavirus in human
nasopharyngeal(NP)or oropharyngeal(OP)swabs sample.COVID-19 antigen can detect the presence of viral protein. It can identify acute or early infection.Suitable for large-scale screening of the general population and epidemiological investigations in low-endemic areas.
SARS-Cov-2 infections is based on the detection of unique viral sequences by nucleic acid amplification tests (NAATs), such as real-time reverse-transcription polymerase chain reaction (rRT-PCR). PCR Assaydetects SAR-CoV-2 in the window period and find the infected as early as possible.