"Cycle Thresholds" (Ct) are the level at which widely used polymerase chain reaction (PCR) test can detect a sample of the COVID-19 virus. The higher the number of cycles, the lower the amount of viral load in the sample; the lower the cycles, the more prevalent the virus was in the original sample.
When someone is tested by PCR as positive when a threshold of 35 cycles or higher is used (as is the case in most laboratories in Europe & the US), the probability that said person is actually infected is less than 3%, the probability that said result is a false positive is 97%
The C.D.C.'s own calculations suggest that it is extremely difficult to detect any live virus in a sample above a threshold of 33 cycles. Officials at some state labs said the C.D.C. had not asked them to note threshold values or to share them with contact-tracing organizations.
Numerous epidemiological experts have argued that cycle thresholds are an important metric by which patients, the public, and policymakers can make more informed decisions about how infectious and/or sick an individual with a positive COVID-19 test might be. However, as JustTheNews reports, health departments across the country are failing to collect that data.
Here are a few headlines from those experts and scientific studies:
1. Experts compiled three datasets with officials from the states of Massachusetts, New York and Nevada that conclude:"Up to 90% of the people who tested positive did not carry a virus."
2. The Wadworth Center, a New York State laboratory, analyzed the results of its July tests at the request of the NYT: 794 positive tests with a Ct of 40: "With a Ct threshold of 35, approximately half of these PCR tests would no longer be considered positive," said the NYT. "And about 70% would no longer be considered positive with a Ct of 30! "
3. An appeals court in Portugal has ruled that the PCR process is not a reliable test for Sars-Cov-2, and therefore any enforced quarantine based on those test results is unlawful.
4. A new study from the Infectious Diseases Society of America, found that at 25 cycles of amplification, 70% of PCR test "positives" are not "cases" since the virus cannot be cultured, it's dead. And by 35: 97% of the positives are non-clinical.
5. PCR is not testing for disease, it's testing for a specific RNA pattern and this is the key pivot. When you increase Ct up to 25, 70% of the positive results are not really "positives" in any clinical sense, since it cannot make you or anyone else sick.
Please help Arkansas avoid further consequences resulting from misleading PCR test procedures by making the disclosure of Ct values mandatory from laboratories in the state.
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