SG Talk

They have the advantage of very quick results, but they're considered less reliable, with false-positives and false-negatives. PCR tests are the gold-standard.

"The difference is in the technologies," says Professor Adrian Esterman, chair of biostatistics and epidemiology at the University of South Australia. "The rapid antigen test works best when the viral load is greater, two days before symptoms show to four or five days after. It's a lot less definitive and accurate than the PCR test."

https://www.traveller.com.au/pcr-covid19...vel-h1z1cz

no wonder many people who kena Covid are ART tested negative after a few days, actually their PCR test result could still be postive.

Once a person tests positive, one can test negative for ART later(recovery). However, the PCR test can still return a positive result.

(14-11-2021, 12:27 PM)lvlrsSTI Wrote: [ -> ]no wonder many people who kena Covid are ART tested negative after a few days, actually their PCR test result could still be postive.

(14-11-2021, 02:03 PM)theold Wrote: [ -> ]Once a person tests positive, one can test negative for ART later(recovery). However, the PCR test can still return a positive result.

I observed that there are many who tested with the ART, gives false negative result, but when they undergo PCR test they are tested as positive.....so a PCR test is the more desired test for Covid-19....

What most people are afraid of is that the virus is hiding somewhere in the body.