How it Works: Real Time PCR How it Works: Real Time PCR Brendan Maher The instrumentation is basic: a thermal cycler for amplification, a light source for excitation of fluorescent probes (see ...

PCR testing is more accurate than an antigen test — because it’s more sensitive at picking up traces of the coronavirus in your body — but it may take longer to get your results than with an at-home ...

And, by the way, the rapid antigen test he took when he got home that night was negative. Regardless of how you much of a health risk you see in COVID, it is still, at best, an inconvenience that ...

As more people begin testing positive for COVID once again, how long might symptoms last? Or if you have no symptoms, how long should you isolate?

To generate test strips that would match PCR standards the team first made tiny DNA nanocircles containing a short sequence of the target DNA, such as the COVID virus, explainec co-author Yi Li, PhD.