About this video
Discover how PCR, antigen tests, viral culture, and serology work to diagnose viral infections — learn which test to use and when. This video breaks down PCR (including RT-PCR), rapid antigen tests, viral culture, and antibody serology, explaining how each detects virus, viral proteins, or the immune response, and why timing and sample type matter. You’ll learn how PCR amplifies viral genetic material (DNA or RNA) for high sensitivity early in infection, when nasal, throat, lesion, or blood samples are…
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