British health officials said on Friday that an estimated 43,000 people in England may have got a false-negative coronavirus test because of problems at a private laboratory.
The U.K. Health Security Agency said a lab in Wolverhampton, Central England, had been suspended from processing any tests after reports of people receiving false negatives. The faulty tests came from Immensa Health Clinic Lab between Sept. 8 and Oct. 12, most of them in the South West of England, the statement says.
About 400,000 samples were processed through the lab and the issue was uncovered after some of the people tested positive for the coronavirus after receiving a negative PCR test. About 43,000 people “may have been given incorrect negative PCR test results,” according to the statement.
While the incident is being investigated, the health agency said it is “an isolated incident attributed to one laboratory” and that it is continuing to contact people who may be infected, advising them to get another test.
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“We have recently seen a rising number of positive LFD results subsequently testing negative on PCR,” Dr. Will Welfare, public health incident director, UKHSA said in a statement. “As a result of our investigation, we are working with NHS Test and Trace and the company to determine the laboratory technical issues which have led to inaccurate PCR results being issued to people.”
Immensa Health Clinic has analyzed more than 2.5 million samples for NHS Test and Trace and the clinics CEO, Andrea Riposati, said they are “fully collaborating with UKHSA” on the matter. She added that she does not wish “this matter or anything else to tarnish the amazing work done by the UK in this pandemic.”
As of Oct. 14, the U.K. has a total of 8.3 million positive COVID-19 cases, and more than 94 million people have been vaccinated.
Follow Keira Wingate on Twitter: @KeiraRenee
This article originally appeared on USA TODAY: Wrong COVID test results given to thousands of people: UK agency