Why pcr test take so long – none:. Cookie Consent and Choices
Joni Sweet is a freelance writer and editor who specializes in travel, health, and wellness. But with COVID still surging in many parts of the country, the need for testing certainly hasn’t gone away. So why is the CDC ditching this test now? Could it be as one viral tweet claimed because this COVID test had been recalled after failing a full review?
Nope, nope, and nope. There’s no truth behind these claims, but the real explanation is pretty straightforward. It encourages labs to switch to tests that can look for this coronavirus and flu viruses at the same time.
It couldn’t tell a lab whether your sample contained any viral material, just whether it had genetic material from the COVID coronavirus. And the genetic material it looks for is highly specific , kind of like a unique fingerprint, so it can’t be confused with that of another virus.
Your test has to be specific for that organism you’re trying to measure,” explains Dwayne Breining , MD, executive director and medical director of Northwell Health Laboratories. PCR tests are among the most accurate clinical tests that have ever been developed.
Taking this test “off the market” helps push labs to adopt those other tests that can check for multiple viruses. Experts say that, while not explicitly mentioned in the announcement, there is another big reason behind the CDC’s latest move.
The CDC, as a federal agency, was uniquely positioned to rapidly create an effective test and deploy it to government-run labs across the country. They had also done a similar thing for Ebola and the Zika virus,” says Dr. Since then, hundreds of new tests have become available across the country. And while they often rely on the same PCR technology used in the CDC’s first test, many of the newer tests are much more efficient for labs to process, allowing them to conduct far more testing on a daily basis without compromising accuracy.
That paved the way for other groups, like private companies and nonprofit organizations, to develop new COVID tests. For one, it’s only withdrawing its EUA request for its own test. It won’t impact the hundreds of other tests still in use.
Plus, very few labs in the country are still using this test, says Dr. Those that are still using this test will have until the end of the year to switch to another option, such as the CDC’s “multiplex assay,” which tests for COVID and multiple flu strains, per the agency’s announcement. If a person did happen to use a lab that used the CDC assay, that lab would have switched over to another test and it will be seamless for the person who gets testing done,” says Dr.
What’s more, moving toward comprehensive testing for multiple viruses at the same time can offer major benefits to both individuals and public health. Knowing which type of infection a patient has gives doctors the opportunity to prescribe the right treatment early on, says Dr. It will also provide officials with more data on clusters of COVID, the flu, and other infections, so they can “save time and resources” during flu season, the CDC points out.
The information in this story is accurate as of press time. However, as the situation surrounding COVID continues to evolve, it’s possible that some data have changed since publication. While Health is trying to keep our stories as up-to-date as possible, we also encourage readers to stay informed on news and recommendations for their own communities by using the CDC , WHO , and their local public health department as resources.
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Why pcr test take so long – none: –
There are two types of tests for COVID the PCR test and the antigen test. Polymerase chain reaction (PCR). This tests for the presence of the actual virus’s genetic material or its fragments as it breaks down. PCR is the most reliable and accurate test for detecting active infection. PCR tests typically take hours to perform, but some are. Because the test (PCR) is so sensitive, the test preparation must adhere to many safeguards to present the samples from contamination. None of the safeguards are all that time consuming, but they must be religiously followed and together can take 1–2 hours for sample prep. Nov 05, · PCR test study was performed without a sample of a potential infected person. It means that the laboratories which perform the test must use the exact same reagents and perform the test in the exact the same way. The PCR test study wasn’t made with a real sample so when implemented on real samples the result may be differ.