Abbott sends the SARS-CoV-2 test results directly to patients’ smartphones, which can be displayed to gain entrance into areas requiring proof of COVID-19 testing
There is no greater example that COVID-19 is a major force for change in the clinical laboratory industry than the fact that—though the US federal government pays 50% of the nation’s total annual healthcare spend of $3.5 trillion—it recently spent $760 million to purchase 150 million COVID-19 tests from Abbott Laboratories (NYSE:ABT), an American multinational medical devices and healthcare company headquartered in Abbott Park, Ill., “to expand strategic, evidence-based testing in the United States,” according to the company’s website.
In August, the federal Food and Drug Administration (FDA) granted an emergency use authorization (EUA) to Abbott for its BinaxNOW portable rapid-response COVID-19 antigen (Ag) test. The credit-card sized test costs $5 and can return clinical laboratory test results in minutes, rather than hours, days, or in some cases, weeks, the Wall Street Journal (WSJ) reported.
The test includes a free smartphone app called NAVICA, which enables those tested to receive their test results directly on their mobile devices—bypassing the patient’s primary care physicians.
According to Abbott’s website, the app “allows people who test negative to get an encrypted temporary digital NAVICA Pass, similar to an airline boarding pass. NAVICA-enabled organizations will be able to verify an individual’s negative COVID-19 test results by scanning the individual’s digital NAVICA Pass to facilitate entry into facilities.”
This feature of Abbott’s new COVID-19 test is a good example of how quickly innovation in the medical laboratory testing profession is bringing new features and new capabilities to the marketplace. By marrying the SARS-CoV-2 test with the NAVICA Pass feature, Abbott hopes to deliver increased value—not just to physicians and their patients—but also to employers with employee screening programs and federal government programs designed to screen federal employees, as well as being used for screening travelers at airports and other transportation hubs.
Abbott appears to be banking that in the future such identification will be required to “enter organizations and other places where people gather,” as the company’s website states.
Testing Limited to CLIA-Certified Clinical Laboratories
An HHS news release announcing the government’s planned distribution of the BinaxNOW tests stated that “Testing will be potentially deployed to schools and to assist with serving other special needs populations.”
In the news release, Alex Azar, HHS Secretary, said, “By strategically distributing 150 million of these tests to where they’re needed most, we can track the virus like never before and protect millions of Americans at risk in especially vulnerable situations.”
The EUA adds that “Testing of nasal swab specimens using [BinaxNOW] … is limited to laboratories certified under CLIA that meet the requirements to perform high, moderate, or waived complexity tests. This test is authorized for use at the [point of care], i.e., in patient care settings operating under a CLIA Certificate of Waiver, Certificate of Compliance, or Certificate of Accreditation.”
IVD Companies See Boom in COVID-19 Test Sales
Demand for COVID-19 testing has created opportunities for in vitro diagnostics (IVD) companies that can develop and bring tests to market quickly.
Recent issues of Dark Daily’s sister print publication—The Dark Report (TDR)—covered IVD companies’ second quarter (Q2) boom in sales of COVID-19 instruments and tests, while also noting a fall-off in routine clinical laboratory testing during the COVID-19 pandemic.
Abbott Laboratories saw molecular diagnostics sales increase 241% in Q2 driven by $283 million in sales of COVID-19 testing, while rapid diagnostic COVID-19 testing rose 11% on $180 million in sales in Q2, TDR reported, based on Abbott data.
“There is huge economic incentive for diagnostic companies to develop technologies that can be used to create rapid tests that are cheap to perform,” said Robert Michel, Publisher and Editor-in-Chief of TDR and Dark Daily. “In this sense, COVID is a major force for change.”
Thus, Abbott is determined to ensure this product launch is successful and that the test works as promised. According to a news release, “In data submitted to the FDA from a clinical study conducted by Abbott with several leading US research universities, the BinaxNOW COVID-19 Ag Card demonstrated sensitivity of 97.1% (positive percent agreement) and specificity of 98.5% (negative percent agreement) in patients suspected of COVID-19 by their healthcare provider within the first seven days of symptom onset.”
“The massive scale of this test and app will allow tens of millions of people to have access to rapid and reliable testing,” said Joseph Petrosino, PhD, professor and chairman, Molecular Virology and Microbiology, Baylor College of Medicine, in the Abbott news release. “With lab-based tests, you get excellent sensitivity but might have to wait days or longer to get the results. With a rapid antigen test, you get a result right away, getting infectious people off the streets and into quarantine so they don’t spread the virus.”
Abbott has invested hundreds of millions of dollars in two manufacturing facilities where the tests will be made, John Hackett Jr, PhD, an immunologist and Abbott’s Divisional Vice President Applied Research and Technology, and lead scientist on the BinaxNOW project, told The Atlantic.
“Our nation’s frontline healthcare workers and clinical laboratory personnel have been under siege since the onset of this pandemic,” said Charles Chiu, MD, PhD, professor of Laboratory Medicine at University of California, San Francisco, in the Abbott news release. “The availability of rapid testing for COVID-19 will help support overburdened laboratories, accelerate turnaround times, and greatly expand access to people who need it.”
However, other experts are not so sure. In the Atlantic article, Michael Mina MD, PhD, Assistant Professor Epidemiology at Harvard’s T.H. Chan School of Public Health, voiced the need to test both asymptomatic and pre-symptomatic people. “This is the type of [COVID-19] test we have been waiting for—but may not be the test.”
Nevertheless, the federal government’s investment is significant. Abbott plans to start shipping tens of millions of tests in September and produce 50 million tests per month starting in October, Forbes reported.
Shifting Clinical Laboratory Paradigms
BinaxNOW will be performed without doctors’ orders, in a variety of locations, and results go directly to patients’ smartphone—without a pathologist’s interpretation and medical laboratory report. This is new ground and the impact on non-CLIA labs, and on healthcare in general, is yet to be seen.
Clinical laboratory managers will want to monitor the rise of rapid-response tests that can be easily accessed, conducted, and reported on without physician input.
Though experts say an antigen test is not as accurate as PCR tests, its low cost, ease of use, and widespread availability make it a boon for clinical labs performing COVID-19 testing
As former FDA commissioner Scott Gottlieb, MD, explained on Face the Nation, “this kind of technology is a real game changer … it’s a very rapid test that could be used in a doctor’s office. Doctors now have about forty thousand of these Sofia machines already installed in their offices … you do a simple nasal swab and the test itself scans for the antigens that the virus produces.
“The test is about 85% sensitive. So, let’s say a hundred people come into a doctor’s office who have COVID-19, eighty-five of them are going to be able to be tested positive with this test very quickly. It’s a cheap test. It’ll probably be about five dollars a test and you can get a result within five minutes … you’re getting a very fast result and you can start to take action immediately.
“The company itself said that they’re going to be able to produce about two hundred thousand of these tests starting right away. But in several weeks, they’ll be able to produce up to 1.5 million a week. So, this dramatically expands our testing capacity as long as doctors are able to run these tests in their offices.”
Other LDTs That Have Received EUAs
Here’s a look at other laboratory-developed tests from major manufacturers that have received emergency-use authorizations from the FDA:
This test is designed for use with Abbott’s m2000 RealTime system, which is installed in about 200 US medical laboratories, the company says. It can run up to 470 patient samples in 24 hours. As of a May 11 statement, the company said it had shipped more than two million tests in the US.
This test is designed for use with Abbott’s Alinity m system, which the company describes as its “most advanced laboratory molecular instrument,” with the ability to run up to 1,080 tests in 24 hours, according to a press release.
This is a rapid test designed for use with the ID Now system, a compact portable instrument for point-of-care settings such as urgent care clinics. As of May 11, Abbott said it had shipped more than 1.7 million tests in the US, and that it planned to increase manufacturing capacity to two million tests per month.
However, the test has encountered some stumbling blocks. On May 14, the FDA issued an alert stating that the ID Now COVID-19 test could produce inaccurate negative results. This came after researchers at NYU Langone Health, Northwell Health, and Cleveland Clinic reported problems with the test, according to MedTech Dive. Abbott issued a statement suggesting that the problems were due to improper sample collection and handling, however, the FDA said that Abbott had agreed to conduct post-market studies to identify the cause of the false negatives and suggest remedial actions.
This is a qualitative test designed to detect the presence of IgG antibodies following a SARS-CoV-2 infection. The FDA authorized use of the assay on Abbott’s Architect i2000SR system in April, and then followed up with a May 11 EUA for its use on the Alinity i system. In a statement, Abbott said it planned to ship 30 million tests globally starting in May.
In a March statement, the FDA touted this as the first point-of-care COVID-19 test to receive an EUA. The company estimates the detection time as approximately 45 minutes. It is designed for use with Cepheid’s GeneXpert Dx diagnostic software and GeneXpert Infinity systems, which have nearly 5,000 US installations, according to a Cepheid statement.
This test runs on Hologic’s Panther system, which, according to a Hologic press release, can provide results in about three hours and run more than 1,000 tests per day. The company claims that more than 1,000 Panther systems are installed in US labs, and that it expects to produce an average of one million tests per week.
Ortho’s antibody test is designed for use with its VITROS XT 7600, 3600, 5600, and ECi/ECiQ immunodiagnostic systems, which, the company says are installed in more than 1,000 US labs. The Total Reagent Pack is a qualitative test that detects the presence of all antibodies against SARS-CoV-2.
On April 24, Ortho announced it had received another FDA EUA, this one for its Anti-SARS-CoV-2 IgG test, which detects the presence of IgG antibodies. In a statement, the company said it expects to produce “several million” IgG tests per month.
This test is designed for use with Roche’s cobas 6800 and 8800 systems. The 6800 can process up to 384 results in an eight-hour shift, Roche says, compared with 1,056 results for the 8800 model. The company says results are available in about 3.5 hours. In a statement, Roche said it planned to ship 400,000 tests per week.
Roche describes this as a qualitative antibody test that can be used on cobas e series immunoassay analyzers. Testing time is 18 minutes. As of May 19, the test was live at more than 20 US labs, “with plans in the next several weeks to increase to more than 200 commercial and hospital lab sites with the ability to perform millions of tests per week,” the company stated in a press release.
It’s likely the FDA will continue to issue emergency-use authorizations as the agency receives more applications from IVD manufacturers.
As federal and state officials ease many regulatory requirements to speed new COVID-19 serology tests to market with minimum data about performance, labs are left with important questions to answer on their own
Every day, elected officials at all levels of government call for a huge expansion of COVID-19 serology testing. But, as most clinical laboratory managers and pathologists know, it is a complex undertaking for a lab to select any serological test, validate it, then run it daily in support of patient care, and have confidence that the results are accurate and reproducible.
Clinical laboratories across the United States understand the volume of testing will be in the tens of millions—even hundreds of millions—of COVID-19 serology tests. That is an important financial opportunity because it gives clinical labs the opportunity to generate some cash flow to offset the 60% decline in daily routine specimens they have experienced since most states enacted shelter-in-place orders in early March.
But this big opportunity to serve physicians and patients with COVID-19 serology testing also comes with equally big risks. There are three major risks a COVID-19 serology testing program that clinical labs must successfully address, otherwise the consequences can be devastating.
Three Major Serology Testing Risks for Clinical Laboratories
Risk one comes during the time when medical laboratories shop for COVID-19 serology tests. As of this writing, about 20 such tests have an emergency use authorization (EUA) with the Food and Drug Administration (FDA) and more are expected to obtain an EUA. As is true with everything in life, not all of these tests will perform equally. The risk to the lab is that it purchases a COVID-19 assay that later proves to be unreliable, despite the lab’s rigorous validation process.
Risk two derives from the fact that new diagnostic methods are being incorporated into the serology tests that companies are submitting to the FDA for an EUA. Although the data submitted to the FDA may indicate acceptable performance to the federal agency, in actual clinical use many unexpected or unknown factors could be recognized which lower confidence that the new method utilized by this particular assay is producing accurate results. That risk would only be recognized downstream from validation and the lab would find itself dealing with unhappy physicians, patients, and employers (who were using the test to check the health of their employees).
Risk three is supply chain risk. Will the manufacturer of the COVID-19 serology test be capable of supplying all of its clinical lab customers with adequate supplies to meet each lab’s demand for this testing? New manufacturers have an unknown track record in their ability to supply their lab customers. But even the largest in vitro diagnostics (IVD) manufacturers may need to ration kits, reagents, and other consumables to the large number of medical laboratories they serve. This happened with the rapid molecular tests for COVID-19. Community laboratories capable of performing these tests could not obtain adequate supplies to serve their client physicians.
Millions Lost on Faulty COVID-19 Serology Test Kits
If there is a fourth major risk to clinical labs performing COVID-19 serology tests for physicians, patients, and employers (who are screening employees in their workplace) it is the negative publicity that can result if a lab’s choice of a COVID-19 serology test ends up generating inaccurate or unreliable test results.
The most recent example is here in the United States. On March 27, Abbott Laboratories announced that the FDA had issued an EUA for its Abbott ID NOW platform and its point-of-care rapid molecular test for COVID-19 that could produce results in less than 15 minutes. This made national news and was hailed regularly during the daily White House COVID-19 Task Force briefings.
What is important with the examples of Spain, United Kingdom, and a major IVD manufacturer is that news outlets are ready to pounce on any evidence that COVID-19 tests are returning inaccurate or unreliable results. This is a source of risk which every clinical laboratory wants to avoid.
How Clinical Laboratories Can Minimize Risk When Buying COVID-19 Serology Tests
This is an exceptional opportunity to gain an inside perspective of how your lab can address the three major risks identified above when selecting a COVID-19 serology test for use in patient care. You’ll gain essential insights about how to assess the public data on tests with an EUA.
This webinar presentation will also discuss how your lab should view all of its COVID-19 testing as a single program. That’s because your lab may test the same patient with a rapid molecular test, then later do serology tests in the days after the patient may have cleared the infection.
Register now for this critical educational opportunity by clicking here or by entering this URL in your web browser (https://www.darkdaily.com/webinar/quality-issues-your-clinical-laboratory-should-know-before-you-buy-or-select-covid-19-serology-tests/).
Limited availability of COVID-19 clinical lab tests is major topic at federal briefings and news stories, yet many of nation’s labs are laying off staff and at point of closing
Cash flow at the nation’s clinical laboratories has crashed, with revenues down by more than $5 billion since early March. This is the biggest financial disaster for the nation’s clinical laboratory industry in its 100-year history and it couldn’t come at a worse time for the American public and the US healthcare system.
At the precise moment when the nation needs clinical laboratories to begin performing millions of tests for SARS-CoV-2, the coronavirus that causes the COVID-19 illness, those same labs are watching their cash flow collapse.
Data from multiple sources gathered by The Dark Report, sister publication of Dark Daily, confirm that—beginning in early March and continuing through last week—clinical laboratories in the United States saw incoming flows of routine specimens decline by between 50% and 60%. During this same time, lab revenue fell by similar amounts.
Clinical Lab Industry Currently Losing $800 to $900 Million Weekly
To give this decline context, the healthcare system spends about $80 billion annually on medical laboratory testing. Thus, labs across the US generated about $1.5 billion in revenue each week during 2019 and into 2020. By April 5, the decline in routine lab specimen volumes reached 55% to 60%. Since then, the clinical lab industry now loses between $800 million and $900 million each week. Total revenue loss from previous levels is already estimated to be $5.2 billion, and it is growing by an additional $800 million to $900 million every week that patients stay away from hospitals and physicians’ offices.
The recent dire financial condition of labs small and large has gone unremarked by federal healthcare officials at the daily White House COVID-19 Task Force briefings. National news sources have yet to report on this development and its implications for successfully expanding the availability and numbers of COVID-19 tests in response to the pandemic.
The rapid and deep decline in specimens and revenue is not limited to clinical laboratories. Biopsy cases referred to anatomic pathology groups have declined by 50% to 60%. Some subspecialty pathology labs saw case referrals drop by 80% or more.
The nation’s two biggest clinical laboratory companies confirmed similar declines in their normal daily flow of routine specimens. Both companies recently reported first-quarter earnings (which included the month of March).
Quest Diagnostics, LabCorp Each Disclose Volume Declines of 50% to 60%
During its Q1 2020 earnings conference call, Chairman, President, and CEO of Quest Diagnostics (NYSE:DGX), Steve Rusckowski, stated, “In April, volume declines continue to intensify as we are seeing signs that volume declines are bottoming out at around 50% to 60%.”
The drop-off in routine lab test referrals was the similar at LabCorp (NYSE:LH). “In our diagnostics business, at the end of the quarter, we experienced reductions in demand for testing of 50% to 55% versus the company’s normal daily levels,” explained Glenn Eisenberg, Executive Vice President and CFO during LabCorp’s Q1 2020 earnings call. “This reduction in demand impacted testing volume broadly but was more heavily weighted towards routine procedures.”
Interviews with independent clinical lab owners and the administrative directors of hospital and health system labs further confirm this rapid and dramatic decline in the number of routine specimens arriving in their labs. Fewer specimens mean fewer claims, which means less revenue to laboratories.
Two Different Financial Futures for ‘Have’ Labs and ‘Have Not’ Labs
What happens next to the clinical laboratory industry in the United States—and to its ability to continue ramping up the availability of adequate numbers of COVID-19 tests in major cities, small towns, and rural areas—will be a story of “haves” and “have nots.”
The “haves” are clinical labs that have access to money. These are publicly-traded lab companies, academic medical center labs, and the sophisticated labs of health networks that operate multiple hospitals. In each case, these organizations have capital reserves and access to loans that will probably enable them to sustain COVID-19 lab testing services at the large volumes required to respond to the pandemic.
clinical labs operated by community hospitals and rural hospitals that were not financially robust before the onset of the pandemic; and,
specialty lab companies that perform a specific number of proprietary diagnostic tests (and for which demand has collapsed as patients stopped seeing their doctors).
Medicare Led Payers in the ‘Lab Test Price Race to the Bottom’
Prior to the onset of the SARS-CoV-2 pandemic, the finances of the “have-not” labs were already shaky, with many on the verge of filing bankruptcy, closing, or selling to a bigger lab company. Much blame for the deteriorating finances at a large proportion of community lab companies, community hospital labs, and rural hospital labs can be attributed to the deep, multi-year price cuts to the Medicare Part B clinical laboratory fee schedule as mandated by the Protecting Access to Medicare Act of 2014 (PAMA).
Medicare’s multi-year cuts to lab test prices were immediately copied by most state Medicaid programs. During this period, private payers followed Medicare’s lead and enacted their own deep cuts to the prices they paid labs for both routine tests and molecular/genetic tests.
That is why—when the pandemic intensified in early March—the 50% to 60% drop in specimens and revenue that hit these labs starved them of essential cash flow. When polled, the owners and directors of these labs acknowledge layoffs of the majority of their staff in all departments. They also reported substantial delays—both in submitted lab test claims and in getting payment for those claims—because claims-processing departments at the labs and private health insurers are understaffed due to shelter-in-place directives.
COVID-19 Test Revenue Helps Only Labs Performing Those Tests
Revenue from COVID-19 testing is helping certain labs offset the revenue loss from fewer routine specimens. XIFIN, Inc., a San Diego company that provides revenue cycle management (RCM) services for clinical laboratories and pathology groups, analyzed the lab test claims for COVID-19 rapid molecular tests. It determined that labs performing these tests are generating enough revenue from these test claims to equal about 20% of their pre-pandemic revenue.
Many CLIA-certified community laboratories and hospital labs have the diagnostic instruments and experience to perform rapid molecular tests for COVID-19. But when contacted, they tell us that their suppliers do not ship them even minimal quantities of the COVID-19 kits, the reagents, and the consumables. Thus, they cannot meet the needs of their client physicians. Instead, they watch as these physicians refer COVID-19 tests to the nation’s largest labs. The supply shortage prevents these smaller labs from doing larger numbers of COVID-19 test for the patients in the communities they serve. It also prevents them from earning the revenues from COVID-19 testing that currently helps the nation’s “have” labs offset the decline in revenue from routine testing.
Congress, national healthcare policymakers, and state governors need to immediately address this situation. Each week that passes during the COVID-19 pandemic and the shelter-in-place directives drains another $800 million to $900 million in revenue from routine lab testing that previously flowed into the nation’s clinical laboratories.
‘Have-not’ Clinical Labs in Small Towns Will Quietly Shrink and Disappear
Without timely intervention and financial support, the nation’s network of ‘have not’ labs, which have so capably served towns away from big metropolitan centers and rural areas, will quietly begin shrinking. One at a time, labs in small towns will close or sell. Local lab facilities will be shuttered and specimens from small-town patients will be transported to big labs hundreds or thousands of miles away.
It is also true that the financial disaster besetting the nation’s clinical laboratory industry will have comparable dramatic consequences for the in vitro diagnostics (IVD) manufacturers that sell them automation, analyzers, reagents, and other supplies. Since early March, IVD manufacturers watched as the pandemic caused orders for new instruments to collapse. During these same weeks, their clinical lab customers ceased ordering routine test kits at pre-pandemic levels. Dark Daily will cover the challenges confronting the IVD and other diagnostics industries in future e-briefings.
Announcing Free COVID-19 STAT Intelligence Briefings for Clinical Labs
With the COVID-19 pandemic creating chaos in nearly every aspect of healthcare, business, and society, clinical labs and their suppliers need timely intelligence and analysis about the innovations and successes achieved by their peers. This week, Dark Daily and The Dark Report are launching COVID-19 STAT Intelligence Briefings (Copy and paste this URL into your browser: https://www.covid19briefings.com). This comprehensive service is free and will cover four basic areas of needs for clinical laboratories as they ramp up COVID-19 testing:
Daily and weekly COVID-19 testing dashboards to guide every lab’s short-term planning;
Proven steps for labs to introduce and validate COVID-19 tests (both rapid molecular tests and serology tests);
Getting paid for COVID-19 testing to ensure every lab’s financial stability and clinical quality; and
Legal and regulatory updates for labs doing COVID19 tests to ensure full compliance.
Also, to help clinical laboratory leaders deal with the coming wave of COVID-19 serology tests, we are producing a free webinar led by James O. Westgard, PhD, FACB, and Sten Westgard, Director of Client Services and Technology, of Westgard QC, Inc.
Each week that the SARS-CoV-2 pandemic continues, and strict shelter-in-place directives are in place, the clinical laboratory industry loses another almost $900 million in revenue from lower volumes of routine testing. No industry can survive when its incoming revenue collapses by 50% to 60% for sustained periods of time.
Will Congress Recognize the Need for a Financial Rescue of ‘Have-not’ Labs?
Thus, it is incumbent on Congress, elected officials, and healthcare policymakers to recognize the financial consequences of the pandemic to the nation’s clinical laboratories. That is particularly true of the ‘have-not’ clinical labs. They do not have the same access to decisionmakers in government as billion-dollar lab companies.
And yet, these labs located in small communities and rural areas often are the only local labs that can do STAT testing in a couple of hours, and where clinical pathologists are personally familiar with local physicians and patients.
These “have-not” labs are vital healthcare resources. They should receive the help they need to get through this unprecedented crisis that is the COVID-19 pandemic.
Media reports in the United Kingdom cite bad timing and centralization of public health laboratories as reasons the UK is struggling to meet testing goals
Clinical pathologists and medical laboratories in UK and the US function within radically different healthcare systems. However, both countries faced similar problems deploying widespread diagnostic testing for SARS-CoV-2, the novel coronavirus that causes COVID-19. And the differences between America’s private healthcare system and the UK’s government-run, single-payer system are exacerbating the UK’s difficulties expanding coronavirus testing to its citizens.
The Dark Daily reported in March that a manufacturing snafu had delayed distribution of a CDC-developed diagnostic test to public health laboratories. This meant virtually all testing had to be performed at the CDC, which further slowed testing. Only later that month was the US able to significantly ramp up its testing capacity, according to data from the COVID Tracking Project.
However, the UK has fared even worse, trailing Germany, the US, and other countries, according to reports in Buzzfeed and other media outlets. On March 11, the UK government established a goal of administering 10,000 COVID-19 tests per day by late March, but fell far short of that mark, The Guardian reported. The UK government now aims to increase this to 25,000 tests per day by late April.
This compares with about 70,000 COVID-19 tests per day in
Germany, the Guardian reported, and about 130,000 per day in the US
(between March 26 and April 14), according to the COVID Tracking Project.
What’s Behind the UK’s Lackluster COVID-19 Testing
Response
In January, when the outbreak first hit, Public Health England (PHE) “began a strict program of contact tracing and testing potential cases,” Buzzfeed reported. But due to limited medical laboratory capacity and low supplies of COVID-19 test kits, the government changed course and de-emphasized testing, instead focusing on increased ICU and ventilator capacity. (Scotland, Wales, and Northern Ireland each have separate public health agencies and national health services.)
Later, when the need for more COVID-19 testing became
apparent, UK pathology laboratories had to contend with global shortages of
testing kits and chemicals, The Guardian reported. At present, COVID-19 testing
is limited to healthcare workers and patients displaying symptoms of pneumonia,
acute
respiratory distress syndrome, or influenza-like illness, PHE stated in “COVID-19:
Investigation and Initial Clinical Management of Possible Cases” guidance.
Another factor that has limited widespread COVID-19 testing is the country’s highly-centralized system of public health laboratories, Buzzfeed reported. “This has limited its ability to scale and process results at the same speed as other countries, despite its efforts to ramp up capacity,” Buzzfeed reported. Public Health England, which initially performed COVID-19 testing at one lab, has expanded to 12 labs. NHS laboratories also are testing for the SARS-CoV-2 coronavirus, PHE stated in “COVID-19: How to Arrange Laboratory Testing” guidance.
Sharon Peacock, PhD, PHE’s National Infection Service Interim Director, Professor of Public Health and Microbiology at the University of Cambridge, and honorary consultant microbiologist at the Cambridge clinical and public health laboratory based at Addenbrookes Hospital, defended this approach at a March hearing of the Science and Technology Committee (Commons) in Parliament.
“Laboratories in this country have largely been merged, so we have a smaller number of larger [medical] laboratories,” she said. “The alternative is to have a single large testing site. From my perspective, it is more efficient to have a bigger testing site than dissipating our efforts into a lot of laboratories around the country.”
Writing in The Guardian, Paul Hunter, MB ChB MD, a microbiologist and Professor of Medicine at University of East Anglia, cites historic factors behind the testing issue. The public health labs, he explained, were established in 1946 as part of the National Health Service. At the time, they were part of the country’s defense against bacteriological warfare. They became part of the UK’s Health Protection Agency (now PHE) in 2003. “Many of the laboratories in the old network were shut down, taken over by local hospitals or merged into a smaller number of regional laboratories,” he wrote.
US Facing Different Clinical Laboratory Testing Problems
Meanwhile, a few medical laboratories in the US are now contending with a different problem: Unused testing capacity, Nature reported. For example, the Broad Institute of MIT and Harvard in Cambridge, Mass., can run up to 2,000 tests per day, “but we aren’t doing that many,” Stacey Gabriel, PhD, a human geneticist and Senior Director of the Genomics Platform at the Broad Institute, told Nature. Factors include supply shortages and incompatibility between electronic health record (EHR) systems at hospitals and academic labs, Nature reported.
Politico
cited the CDC’s narrow testing criteria, and a lack of supplies for collecting
and analyzing patient samples—such as swabs and personal protective equipment—as
reasons for the slowdown in testing at some clinical laboratories in the US.
Challenges Deploying Antibody Tests in UK
The UK has also had problems deploying serology tests designed to detect whether people have developed antibodies against the virus. In late March, Peacock told members of Parliament that at-home test kits for COVID-19 would be available to the public through Amazon and retail pharmacy chains, the Independent reported. And, Politico reported that the government had ordered 3.5 million at-home test kits for COVID-19.
However, researchers at the University of Oxford who had been charged with validating the accuracy of the kits, reported on April 5 that the tests had not performed well and did not meet criteria established by the UK Medicines and Healthcare products Regulatory Agency (MHRA). “We see many false negatives (tests where no antibody is detected despite the fact we know it is there), and we also see false positives,” wrote Professor Sir John Bell, GBE, FRS, Professor of Medicine at the university, in a blog post. No test [for COVID-19], he wrote, “has been acclaimed by health authorities as having the necessary characteristics for screening people accurately for protective immunity.”
He added that it would be “at least a month” before suppliers could develop an acceptable COVID-19 test.
In the United States, the Cellex COVID-19 test is intended for use by medical laboratories. As well, many research sites, academic medical centers, clinical laboratories, and in vitro diagnostics (IVD) companies in the US are working to develop and validate serological tests for COVID-19.
Within weeks, it is expected that a growing number of such
tests will qualify for a Food and Drug Administration (FDA) Emergency Use
Authorization (EUA) and become available for use in patient care.