In the months since the COVID-19 panic began health authorities around the world have told the public to “get tested” to help track the spread of SARS-CoV-2. However, as fear and hysteria subside, the scientific community and public at large are calling into question the efficacy of the test used to determine a patients status. This article is a brief examination of the evidence that the PCR test is unreliable and should not be used as a determinant for the number of COVID-19 cases or as a factor in political decisions.
The most common test is a polymerase chain reaction (PCR) lab test. This incredibly sensitive technique was developed by Berkeley scientist Kary Mullis, for which he was awarded the Nobel Prize in 1993. The test is designed to detect the presence of a virus by amplifying the virus’ genetic material so it can be detected by scientists. The test is viewed as the gold standard, however, it is not without problems.
The PCR test uses chemicals to amplify the virus’s genetic material and then each sample goes through a number of cycles until a virus is recovered. This “cycle threshold” has become a key component in the debate around the efficacy of the PCR test.
When the labs report numbers of COVID-19 cases they only offer a binary option of “yes” for positive or “no” for negative. “But, in reality, it comes in what is called cycle-thresholds. It’s an inverse relationship, so the higher the number the less virus there was in the initial sample. Some labs will report out to 40 cycle-thresholds, and if they get a positive at 40 – which means there is a tiny, tiny, tiny amount of virus there – that gets reported to us as positive and we don’t know any different.”
The key question is, at what value is someone considered still infectious?
“Because if you test me and I have a tiny amount of virus, does that mean I am contagious? that I am still infectious to someone else? If you are shedding a little bit of virus are you just starting? or are you on the downside?,”...<<<Read The Full Article Here>>>...
