This image provided by Abbott Laboratories in August 2020 shows the company’s BinaxNOW rapid COVID-19 nasal swab test. More than 3.8 million rapid tests are now in the hands of provincial health authorities but many jurisdictions are still evaluating how they might help battle the COVID-19 pandemic. THE CANADIAN PRESS/HO-Abbott Laboratories via AP

This image provided by Abbott Laboratories in August 2020 shows the company’s BinaxNOW rapid COVID-19 nasal swab test. More than 3.8 million rapid tests are now in the hands of provincial health authorities but many jurisdictions are still evaluating how they might help battle the COVID-19 pandemic. THE CANADIAN PRESS/HO-Abbott Laboratories via AP

Rapid tests slow to be used as health officials unsure of reliability, best use

Canada has announced plans to buy nearly 38 million rapid tests from five different manufacturers

More than 3.8 million rapid tests for COVID-19 are now in the hands of provincial health authorities but many jurisdictions are still evaluating how the devices might help battle the pandemic.

Health Canada has approved more than three dozen different tests for COVID-19, but only six of them are “point-of-care” versions more commonly referred to as rapid tests.

The “gold-standard” COVID-19 tests need to be processed in a lab, and usually take at least a day to provide results. Rapid tests can be processed in the same place a patient is tested, sometimes in as few as 15 minutes, but they are generally considered less reliable than lab results.

There are two different kinds of rapid tests. One, like the traditional lab-based version, looks for the genetic material of the novel coronavirus. The other looks for the specific markers the virus leaves on the outside of a cell, known as antigens.

Since Sept. 29, Canada has announced plans to buy nearly 38 million rapid tests from five different manufacturers, and began sending the first shipments to provinces in the late last month.

As of this week, more than 3.8 million have been delivered.

Ontario Premier Doug Ford called rapid tests “an absolute game changer” the day the federal government announced its deal with Abbott Diagnostics to buy 7.9 million of its ID Now genetic tests.

They aren’t changing much yet.

Most jurisdictions are still not whether they can fully trust the results, or figure out the best way to use them. In almost all cases, the rapid-test results are still being verified by also testing a patient with the lab-based version.

Ontario Health said Friday the province has started to “roll out” some rapid tests focused on detecting outbreaks and in rural settings where lab tests are harder to access.

Ontario Health will study the results of the initial rollout “to inform possible expansion of the use of this technology,” the department’s spokespeople said in a written statement.

Dr. Vera Etches, the medical officer of health in Ottawa, says her city’s testing team is looking at some pilot projects to use rapid tests, such as at a long-term care home with a suspected outbreak. But she said there are still concerns rapid tests might not be as reliable as the lab tests.

“We’re still needing to study how much would COVID be missed by tests that are falsely negative,” she said.

British Columbia health officer Dr. Bonnie Henry said Thursday that her province is still validating the ID Now tests at the BC Centre for Disease Control.

She said B.C. has also received some antigen tests but those aren’t yet being used.

“The challenges we have are that they’re not as sensitive, so they don’t pick certain things,” she said.

“But we do know that they can play an important role in places like where we have a cluster of people with an illness and we need to rapidly determine if it is COVID or not. If several people are tested and they’re all negative, that’s reassuring. If one of them is positive, that tells you that this is probably an outbreak that you’re dealing with.”

ALSO READ: Interpreters for B.C.’s COVID updates would boost awareness of pandemic protocols, advocate says

Manitoba has sent several ID Now test kits to remote communities where lab tests can take longer, and to a Winnipeg hospital in the midst of a COVID-19 outbreak. But health workers are still learning how to use them. The swabbing must still be done by trained professionals.

A spokeswoman for Manitoba Health said this week the tests will likely start being used there by the end of the month.

As with Ontario and B.C., Manitoba Health is viewing the rapid tests as experimental, verifying most rapid tests with the lab-based model and then studying the results overall to see how they’re working.

Manitoba Health plans to use the antigen tests it received only as a screening tool, but is still validating the accuracy of antigen tests overall.

A spokeswoman for the Quebec health ministry said Friday Quebec has received 30,000 ID Now tests, and 547,000 antigen tests, known as Panbio, made by Abbott Laboratories.

Marjorie Larouche said in a written statement that the rapid tests are “less sensitive” than lab-based tests.

“Deployment must therefore be carried out in a very supervised and co-ordinated manner,” she said.

An expert committee was set up in Quebec to decide how the tests should be used and is evaluating them in several pilot projects in hospitals in the Montreal and Quebec City areas.

Quebec is looking at using the tests in remote areas, for health workers, screening clinics, long-term care facilities and schools.

“The date for the distribution of tests has not yet been determined,” she said, adding it is expected before the end the year.

— With files from Brenna Owen in Vancouver.

Mia Rabson, The Canadian Press


Like us on Facebook and follow us on Twitter.

Want to support local journalism during the pandemic? Make a donation here.

Coronavirus

Just Posted

Investigators are on the scene Tuesday (May 18) of a fatal motorcycle collision at Hallert and Bell roads on Matsqui Prairie in Abbotsford. (PHOTO: Shane MacKichan)
Motorcyclist, 64, killed in crash with SUV in Abbotsford

Collision took place Tuesday morning at Bell and Hallert roads

Thirteen-year-old Allison Hickman was last seen in Chilliwack May 14. (RCMP photo)
RCMP say missing Surrey teenager was last seen in Chilliwack

Allison Hickman was last seen in the downtown Chilliwack area on May 14

Dr. Euiseok Kim is the medical director of the new Abbotsford post-COVID-19 recovery clinic. (Submitted)
Post-COVID-19 recovery clinic opens in Abbotsford

New facility following model of first clinic which opened in Surrey

Two small dogs were also discovered by the officer, one had died, and the other was taken by animal control and sent for veterinary care with the BC SPCA. (File Photo)
Body discovered in parked van in Mission with 2 dogs, 1 dead

Remains in state of decomposition, surviving dog sent for veterinary care with BC SPCA

Reinhard “Bud” Loewen has now been charged with 21 counts of sexual assault related to his massage business. (Facebook photo)
Former Abbotsford masseur now faces 21 counts of sexual assault

Bud Loewen of Bud’s Massage Therapy initally faced three charges

A prowling coyote proved no match for a stray black cat who chased it out of a Port Moody parking lot Friday, May 14. (Twitter/Screen grab)
VIDEO: Cat who chases away coyote asked to join Port Moody, Vancouver police 

Caught on camera Friday, the black cat jumps out from under a parked car and runs the wild animal out of a vacant lot

The Combined Forces Special Enforcement Unit released a poster Tuesday, May 18 featuring the names and photos of more suspects involved in the Lower Mainland gang conflict.
Police issue warning for 8 more men involved in Lower Mainland gang conflict

B.C.’s gang task force says it’s expecting ‘violence to continue and escalate’

A restaurant server on White Rock’s Marine Drive serves customers on a roadside patio. Indoor dining and recreational travel bans have been in effect since late March in B.C. (Peace Arch News)
B.C.’s COVID-19 infection rate falls to 411 cases Tuesday

360 people in hospital, up slightly, two more deaths

The Banff National Park entrance is shown in Banff, Alta., Tuesday, March 24, 2020. THE CANADIAN PRESS/Jeff McIntosh
Minister asks Canadians to camp carefully in national parks as season starts

Kitchen shelters in Banff National Park closed, trails on Vancouver Island will only be one-way

Names of those aboard the ship are seen at Komagata Maru monument in downtown Vancouver, on Tuesday, May 18, 2021. The City of Vancouver has issued an apology for its racist role in denying entry to 376 passengers aboard a ship that was forced to return to India over a century ago. Mayor Kennedy Stewart says discrimination by the city had “cruel effects” on the Sikhs, Hindus and Muslims aboard the Komagata Maru, which arrived in Burrard Inlet on May 23, 1914. THE CANADIAN PRESS/Darryl Dyck
Vancouver mayor says sorry for city’s role in turning away South Asians in 1914

Kennedy Stewart has declared May 23 as the annual Komagata Maru Day of Remembrance

A crew of WestCoast WILD Adventures employees tackled an onslaught of litter left at the ‘Locks of Love’ fence at Wally Creek on May 2. (Anne-Marie Gosselin photo)
Litter woes consume popular ‘Locks of Love’ fence on B.C.’s Pacific Rim

Popular view spot near Tofino plagued by people hanging masks and other unwanted garbage

Vincent Doumeizel, senior advisor at the United Nations Global Compact on Oceans, as well as director for the Food Programme for the Lloyd’s Register Foundation, pulls up some sugar kelp seaweed off the French coast in April 2020. He was the keynote speaker during the opening ceremony of the inaugural Seaweed Days Festival. (Vincent Doumeizel/Submitted)
Let’s hear it for seaweed: slimy, unsexy and the world’s greatest untapped food source

Experts talks emerging industry’s challenges and potential at Sidney inaugural Seawood Days Festival

Troy Patterson, a Cadboro Bay 15-year-old, got a virtual meeting with B.C.’s environment minister months after he started an online petition calling for construction of the Coastal GasLink pipeline to stop. (Jake Romphf/News Staff)
B.C. teen’s 23,000-name Coastal GasLink petition gets him an audience with the minister

15-year-old Saanich high school student and George Heyman discussed project for about 30 minutes

Announced Tuesday, May 18 by Public Safety Minister Mike Farnworth, the province added gyms, dance and fitness studios to its list of places where face coverings are mandatory (AP/Steven Senne)
Masks now required at all times inside B.C. gyms, including during workouts

Those who disobey could be subject to a $230 fine

Most Read