Rapid Tests for Coronavirus Raise Concerns Over Accuracy

Rapid Tests for Coronavirus Raise Concerns Over Accuracy

On Mar. 27, 2020, the U.S. Food and Drug Administration (FDA) issued Emergency Use Authorization (EUA) to pharmaceutical and medical devices company Abbott Laboratories, Inc. of Abbott Park, Illinois for a rapid diagnostic test for the SARS-CoV-2 virus known as ID NOW.1 2 3 “We know how important it is to get point-of-care tests out in the field quickly. These tests that can give results quickly can be a game changer in diagnosing COVID-19,” FDA commissioner Steve Hahn said.1

Abbott’s ID NOW test is a portable device that weighs 6.6 pounds and is about the size of a toaster. At the time it was granted the EUA, Abbott had approximately  18,000 ID NOW devices in the United States and the company said it planned to manufacture more so that it could provide 50,000 tests per day. According to Abbott, ID NOW can deliver “positive results in as little as five minutes and negative results in 13 minutes.”1 2 3

“The COVID-19 pandemic will be fought on multiple fronts, and a portable molecular test that offers results in minutes adds to the broad range of diagnostic solutions needed to combat this virus,” Abbott president and CEO Robert Ford said. “With rapid testing on ID NOW, healthcare providers can perform molecular point-of-care testing outside the traditional four walls of a hospital in outbreak hotspots.”2 3

The FDA also granted SARS-CoV-2 rapid test EUAs to Cepheid, Inc. of Sunnyvale, California for its Xpert Xpress test and Mesa Biotech, Inc. of San Diego, CA for its Accula test .1 2 4 5 6

The idea behind the increased reliance on rapid tests is that enables significantly more coronavirus testing of the population. Not only do these tests allow results to be available within half an hour, they can be administered in a wider variety of health care settings, including doctor’s offices. The more traditional tests for SARS-CoV-2 that are sent off to labs for evaluation take between 24 to 48 hours to obtain results.7

Rapid Tests May Provide False Sense of Security

The rapid tests are faster and more convenient. Joe Petrosino, PhD, chair of molecular virology and microbiology at Baylor College of Medicine, compares to going to eat at a “fast food chain” or a “gourmet restaurant.”7

The problem with the rapid tests, however, is that they’re not nearly as reliable as the tests sent to labs for processing. While most of the PCR (polymerase chain reaction) lab tests that take a couple of days to evaluate are more than 90 percent accurate, the rapid tests can be less than 80 percent accurate.7

The relative inaccuracy of the rapid tests means that these tests may be giving people who get them a false sense of security.

Dr. Petrosino cautioned:

I don’t think there’s a lot of awareness about the differences between rapid tests and the more traditional lab, send it out, 24 to 48 hour results type tests. It’s very important to know the difference. If you go to a rapid clinic and come out with a negative result, you think you’re okay and you could be exposing and putting a lot of individuals at risk.7

“There’s no way I would be comfortable missing two out of 10 patients,” said Susan Whittier, PhD, director of clinical microbiology at NewYork-Presbyterian/Columbia University Medical Center.8

FDA Warns of Inaccuracy of Abbott’s Rapid Test

On May 14, 2020, the FDA issued a warning to the public regarding the inaccuracy of Abbott’s ID NOW test. The warning began: “Today, the U.S. Food and Drug Administration is alerting the public to early data that suggest potential inaccurate results from using the Abbott ID NOW point-of-care test to diagnose COVID-19. Specifically, the test may return false negative results.”9 10

“We are still evaluating the information about inaccurate results and are in direct communications with Abbott about this important issue. We will continue to study the data available and are working with the company to create additional mechanisms for studying the test,” said Tim Stenzel, MD, PhD of the FDA’s Center for Devices and Radiological Health.9 10

In a study conducted by researchers at New York University, the ID NOW test missed more than 48 percent of the SARS-CoV-2 samples found to be positive by Cepheid’s Xpert Xpress test. Based on this finding, ID NOW may be missing about half of the positive cases of the virus.11

A total of 3.7 million ID NOW tests have reportedly been delivered to all 50 states in the country.12


References:

1 Hauck G. ‘A game changer’: FDA authorizes Abbott Labs’ portable, 5-minute coronavirus test the size of a toaster. USA Today Mar. 28, 2020.
2 Japsen B. U.S. Approves Abbott Labs Five-Minute ‘Rapid’ Coronavirus Test. Forbes Mar. 27, 2020.
3 Press Release. Abbott Launches Molecular Point-of-Care Test to Detect Novel Coronavirus in as Little as Five Minutes. Abbott Mar. 27, 2020.
4 Japsen B. FDA Approves More ‘Rapid’ COVID-19 Coronavirus Tests For Use On Frontlines. Forbes Mar. 24, 2020.
5 Press Release. Cepheid Receives Emergency Use Authorization from FDA for Rapid SARS-CoV-2 Test. Cepheid Mar. 21, 2020.
6 Press Release. Mesa Biotech Receives Emergency Use Authorization from FDA for a 30 Minute Point of Care Molecular COVID-19 Test. Mesa Biotech Mar. 24, 2020.
7 Benito M. ‘Faster doesn’t mean better’ | Rapid COVID-19 testing not as reliable as traditional tests, experts say. KHOU 11 June 15, 2020.
8 Pradhan R. As problems grow with Abbott’s fast Covid test, FDA standards are under fire. Kaiser Health News June 22, 2020.
9 Press Release. Coronavirus (COVID-19) Update: FDA Informs Public About Possible Accuracy Concerns with Abbott ID NOW Point-of-Care Test. U.S. Food and Drug Administration May 14, 2020.
10 Rodriguez S. FDA issues warning on accuracy of Abbott’s rapid coronavirus test after study finds false negatives. CNBC May 15, 2020.
11 Basu A, et al. Performance of the rapid Nucleic Acid Amplification by Abbott ID NOW COVID-19 in nasopharyngeal swabs transported in viral media and dry nasal swabs, in a New York City academic institution. Journal of Clinical Microbiology May 11, 2020.
12 Crotti N. Report: FDA lists 106 adverse events for Abbott’s rapid COVID-19 test; none for other rapid tests. MassDevice Medical Network June 22, 2020.

6 Responses to "Rapid Tests for Coronavirus Raise Concerns Over Accuracy"

  1. Mark R   June 29, 2020 at 4:04 pm

    What we know:
    Not one facility has conducted what is known as Koch’s Postulates. Not one. These are Four criteria that were established by Robert Koch to identify the causative agent of a particular disease, these include:

    1) the microorganism or other pathogen must be present in all cases of the disease
    2) the pathogen can be isolated from the diseased host and grown in pure culture
    3) the pathogen from the pure culture must cause the disease when inoculated into a healthy, susceptible laboratory animal
    4) the pathogen must be re-isolated from the new host and shown to be the same as the originally inoculated pathogen

    So there is now way anyone can say this so-called “virus” is the cause of anything. Until Koch’s Postulates are performed and verified this is only speculation.
    As for the PCR test being used, it was NEVER determined to be a diagnostic test. It ONLY has the capability to measure “genetic material” and NOT a live virus. As such, there are hundreds of corona viruses we have been exposed to in our lifetime – the common cold being one of them. It is well known the PCR test has up to 80% FALSE POSITIVE results meaning out of 100 people, 80 of them will be told they have a disease when, in fact, they do NOT.
    The so-called anti-body tests have been shown to be unreliable. Antibody tests to a coronavirus cannot prove anything. We do not make reliable antibodies to corona virus, HIV and Hep B & Hep C. So just because you may show antibodies it says nothing about being “immune” to this.
    The ONLY reliable testing is go back to Koch’s Postulates and prove the virus is responsible for the diseases the gov claims.
    We know how Medicare pays out larger sums of money for a COVID-19 DX on the reports giving monetary incentives to falsify the reports. we know ever since this COVID-19 scam appeared, deaths from cancer, influenza, cardiovascular diseases and many more have miraculously disappeared or are now insignificant.
    It is the BIGGEST scam in human history.

    Reply
  2. CAWS   June 29, 2020 at 4:50 pm

    Everybody wants to make a buck. Nobody seems to care about the accuracy. Plenty of false positives on the first USA tests too. So who knows what the real numbers are?

    Reply
  3. Dr. Kristine Severyn   June 29, 2020 at 8:33 pm

    And, government coronavirus tracers are sentencing folks to house arrest (quarantine, isolation) based on inaccurate test results.

    Reply
  4. Jay   June 30, 2020 at 12:11 am

    Its not false negative but true negatives when considering specificity of these qauntitative not qualitative rt qPCR tests. Good article:
    https://www.globalresearch.ca/covid19-pcr-tests-scientifically-meaningless/5717253
    PCR was never meant for diagnosis. CDC/NIH/NIAID pulling same tricks they did with HIV.

    Reply
  5. Nathan Kirchner   July 1, 2020 at 2:02 am

    Such transparent propaganda. If Marco Cáceres is duped so easily then I have little faith in this organization to accomplish anything. I know, it’s hard to excel your performance with the 1986 U.S. National Childhood Vaccine Injury Act. This is a war, so please stop carrying their ammo for them.

    Reply
  6. Joseph   July 1, 2020 at 8:07 am

    @Jay
    THAT!

    Reply

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