Ft10 Sep 2020 10:23
As more employees return to work, and students flock back to universities, epidemiologists have underscored the need for robust and widescale testing to screen for infection and prevent local outbreaks.
While the government undertakes large trials of several rapid Covid-19 tests, some companies have swept in to meet private demand for scalable testing systems that do not require professional medical administration.
British biotech company Halo will launch a saliva test which it says provides results within 24 hours. Clients can take the test at home by spitting into a tube, and sending the sample off for processing at the company’s lab at Imperial College London.
The group’s first customer is Exeter University which has bought tens of thousands of tests, and Halo said it is in talks with an unnamed hedge fund and a major international airline.
“Saliva is much less intrusive, has a lower impact on the environment and is less labour intensive than other tests,” said Jonathan Biles, Halo’s chief executive. “Our tests are very, very sensitive. We think we’ve got something that’s game-changing.”
Mr Biles said the test, which purifies the genetic material from saliva and uses polymerase chain reaction to detect the virus in a lab, is close to 100 per cent accurate.
With iAbra’s Virolens test, a digital camera attached to a microscope is used to analyse saliva samples, with the data then run through a computer. Each digital camera machine can process several hundreds of tests per day, the company said.
iAbra said the cost of the machine that processes the data is less than $20,000, with each testing kit equivalent to “roughly the price of a paperback book”.
Studies conducted by the University of Bristol found that the test had 99.8 per cent sensitivity, identifying all real cases and avoiding false negatives.
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