Meet the Labs Tasked with Making LA's COVID Testing Mandate Work

Keerthi Vedantam

Keerthi Vedantam is a bioscience reporter at dot.LA. She cut her teeth covering everything from cloud computing to 5G in San Francisco and Seattle. Before she covered tech, Keerthi reported on tribal lands and congressional policy in Washington, D.C. Connect with her on Twitter, Clubhouse (@keerthivedantam) or Signal at 408-470-0776.

Meet the Labs Tasked with Making LA's COVID Testing Mandate Work

Los Angeles health care workers and school faculty (who are unable to get vaccinated) are now mandated by the state to get tested regularly. In the city and county, municipal employees from bus drivers to police officers are also required to be tested regularly if they do not get vaccinated.

Meanwhile, commercial labs, medical labs and public health labs are tasked with making sure the tests get processed and rapidly turned around. PCR tests, the most accurate kind of COVID-19 test that looks for viral RNA, are only useful if results are given within two days of taking the sample. Any longer than that, and California residents who unknowingly have the virus risk spreading it to more people.

"If it's longer than [two days] then the test results become less useful from a public health perspective," said Jeff Klausner, an infectious disease expert and member of the state's coronavirus testing task force. "The idea initially was to use contact tracing to find out who was positive as fast as possible to disrupt the chain of transmission. But given the huge number of cases that wasn't useful."

Of course, even two days of turnaround time isn't a foolproof way to stop the coronavirus from spreading. Someone could give a sample on one day, contract the virus later that day, and not know until a week later when they take another PCR test. But the state sees it as a more efficient method than contact tracing.

The two-day turnaround time has forced labs to stay open 24/7, with lab workers taking shifts under a rotating cast of managers. Some companies, like SummerBio, have automated the testing process to turn around thousands of results in the span of two days. It's a leap from the start of the pandemic, when companies struggling with inefficient supply were struggling to process tests any shorter than a week.

Labs processed nearly 1.6 million COVID-19 tests for Californians between Aug. 8 and Aug. 14, a big jump from the peak of the pandemic last winter, when labs were processing around half a million tests a day. That number will need to grow exponentially, as mandates send millions of California students and workers to testing sites as the delta variant surges. Klausner said the state has the capacity to process about 4 to 5 million tests a week.

"Right now we're in a way different place than we were [in] March 2020 when it made sense to declare a state of emergency to get prepared," Klausner, a member of the California coronavirus testing task force, said. "Now it doesn't make sense to continue the state of emergency. And we have a lot of laboratory capacity and there's a lot of underutilization."

That's not to say the state may run into problems down the line. Supply shortages, malfunctions in labs that are processing the bulk of tests could net false-positive COVID-19 results, or bring us back to the beginning of the pandemic, when test results took weeks to return and public officials scrambled to create the infrastructure to support mass testing amid supply shortages.

This could also further fuel the spread of the hyper-contagious delta variant.

The California Department of Public Health said it could not provide an estimate on how many workers in California were bound by a testing mandate.

"The number of people mandated to get tested on a regular basis is determined by those who eventually become vaccinated and those who remain unvaccinated. Therefore, it is a fluid number," a department representative said by email.

Here are the top ten labs in the state and how quickly they turned tests for the week of Aug. 8:


  • TESTS PERFORMED: 267,405

SummerBio, which has contracted with the Los Angeles School District, to test students and employees was responsible for approximately 8% of all COVID-19 testing in the first week of August. The company, based in Menlo Park, CA, was founded in 2020 and quickly raised $7.3 million to test for the coronavirus. While LAUSD is its biggest customer, the company has also partnered with UCLA, San Diego Unified School District, and a slew of large companies.

Fulgent Genetics

  • TESTS PERFORMED: 146,836

The ten-year-old diagnostics company Fulgent Genetics has long been involved in genetic testing to screen for hereditary conditions and cancers. It has leveraged its partnerships with hospitals, large companies and cities to test for COVID.

Valencia Branch Lab

  • TESTS PERFORMED: 118,184

Valencia Branch Lab is a public health laboratory north of Los Angeles that has partnered with Color, a startup creating testing kits for hereditary health problems that pivoted to COVID testing during the pandemic. In February, the California Department of Public Health announced multiple samples at the lab were either incorrectly processed or unable to be processed due to lab errors, but the company in charge of the lab said those errors have since been resolved.

Kaiser SoCal


Kaiser SoCal, which comprises 15 hospitals across Southern California, has taken on the lion's share of COVID-19 testing across all medical institutions in the state. The group has two labs that can process 280,000 tests a week.


  • TESTS: 77,232

Quest Diagnostics, another senior diagnostics company that has been doing bloodwork long before the pandemic, quickly added COVID-19 testing to its slew of deliverables. The company's partnership with grocery stores like Safeway and Vons have allowed it to expand their reach.

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Good News Piles Up for VinFast

David Shultz

David Shultz is a freelance writer who lives in Santa Barbara, California. His writing has appeared in The Atlantic, Outside and Nautilus, among other publications.

Slate grey Vinfast car

VinFast, a Vietnamese electric vehicle startup with headquarters in Singapore and Los Angeles, is gathering serious momentum in the United States. In the last 7 days the company has announced a partnership with Taiwan-based solid state battery company ProLogium, opened 6 stores in California, and secured $1.2 billion in incentives for a manufacturing plant in North Carolina.

The partnership with ProLogium comes in the form of a memorandum of understanding, and an investment from the EV hopeful valued in the “tens of millions” of dollars. The memo outlines a business structure that gives VinFast priority to purchase ProLogium’s solid state battery packs and ancillary technology.

ProLogium will produce the solid-state batteries in one of its Asian manufacturing facilities, and—if all goes well—the batteries could be available in VinFast electric vehicles by 2023. A successful partnership could put VinFast on pace to be the first EV manufacturer with solid state battery tech in their cars.

The battery’s technical specifications have not been released —but solid-state technology offers myriad advantages over traditional lithium-ion architecture. Benefits include faster charging, better thermal properties, and potentially higher range. If the company can deliver on a 2023 timeline, they may be the first to market, ahead of hopefuls such as QuantumScape, Solid Power, and Mullen. The race is on. Stay tuned.

VinFast opened six stores this week in California, with locations in Santa Monica, San Mateo, La Jolla, Los Angeles, Berkeley, and the Bay Area. The showrooms are stocked with the company’s first two EV’s, the VF 8 and VF 9. Why the numbers start at 8 is anyone’s guess, but the VF 8 is a 5-seat AWD SUV with an expected range of just over 300 miles and a price tag starting at $40,700. The VF 9 is a full-sized SUV with 3 rows of seating, a max range of 369 miles, and a base price of $55,500.

VinFast showrooms will also likely serve as a forum for the company to explain its confusing battery leasing program. Yes, in addition to the sticker prices listed above, buyers will need to lease the battery packs for their cars. As Forbes reported:

The basic plan comes in at $35 a month for the VF 8 and $44 for the VF 9. Motorists will get up to 310 miles of free use each month. Motorists who go above that will pay an additional 11 cents per mile for the VF 8 and 15 cents with the VF 9. An alternate, all-you-can-drive plan will run $110 a month for the VF 8 and $160 for the VF 9.

VinFast’s good week was capped by the announcement that the company had secured $1.2 billion in incentives from the state of North Carolina to build a factory in Chatham County — the largest economic incentive package in state history. VinFast is planning for the plant to cover 2,000 acres, allowing for production of up to 150,000 vehicles per year. Construction is scheduled to start before the end of 2022 and production may come online as early as July 2024.

Feds Investigate Tesla Crash that Killed Retired California Couple

Steve Huff
Steve Huff is an Editor and Reporter at dot.LA. Steve was previously managing editor for The Metaverse Post and before that deputy digital editor for Maxim magazine. He has written for Inside Hook, Observer and New York Mag. Steve is the author of two official tie-ins books for AMC’s hit “Breaking Bad” prequel, “Better Call Saul.” He’s also a classically-trained tenor and has performed with opera companies and orchestras all over the Eastern U.S. He lives in the greater Boston metro area with his wife, educator Dr. Dana Huff.
Interior view of Tesla car

The National Highway Traffic Safety Administration (NHTSA) has begun an investigation into the circumstances surrounding the deaths of Lompoc, CA retirees Mary Lou Seelandt, 66, and her husband, Karl Seelandt, 67. The couple died July 6 at a Florida rest stop after their 2015 Tesla plowed into the rear of a parked semi.

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