PCR and rapid tests each work differently. The PCR (which stands for polymerase chain reaction) test looks for genetic material from the virus, while the rapid test looks for viral antigens, a ...

PCR tests detect the genetic material from the virus, while rapid antigen tests detect specific proteins from the coronavirus. Here is the best time to use each, and how to use them to gather ...

COVID tests are in short supply, but it's still possible to find some, including for free. Here's what to look for, and how to get an accurate result.

Need an at-home COVID PCR test kit? Just use DoorDash You can order a COVID-19 test online through DoorDash and get same-day delivery. Here's how to do it.

A recent real-world study that followed 30 subjects likely exposed to omicron found that PCR saliva tests can catch Covid-19 cases three days before rapid antigen tests, which use nasal swabs.

The COVID-19 pandemic has highlighted the important role that polymerase chain reaction (PCR) can play in molecular diagnostics. PCR-based testing quickly became the predominant method used to ...

The eccentric scientist behind the ‘gold standard’ COVID-19 test Bombastic biochemist Kary Mullis invented PCR, a tool that redefined genetic science, while driving in 1983. That was only the ...