You can lead a horse to water, but you cannot make it drink!
Another ad hominem attack I see. Is that the best you can do when your argument is proven to be fallacious? Below are some of the people most likely to know.
Professional Association of Laboratory Medics, Germany: “The association is worried that the materials required for testing — sample kits, materials for extracting samples, and reagents — are becoming scarce”
    Department of Health, Australia: “Due to global demand exceeding supply, stocks of all laboratory related testing consumables are under considerable strain. At the moment there are particular concerns around supplies of swabs and DNA extraction kits.”
    Centre for Disease Control, United States: Important reagents are “now are in short supply,”
    Leo Varadkar, Ireland: “The current cause of delay is a shortage of reagents. We hope to address that but then there may be a shortage of something else. We have to be honest about that – we will hit delays.”
    Chief Public Health Officer, Province of Manitoba, Canada: “Right now the major roadblock is the reagent and that is worldwide.”
    Center for Disease Control and Prevention, South Korea: “Kwon Jun-wook, deputy director of the Korea Centers for Disease Control and Prevention, said … it was true that Roche Diagnostics’ supply of reagents for nucleic acid extraction was not stable.”
    Health Ministry, Israel: Deputy Director General Prof. Itamar Grotto said that “Unfortunately what we just received is not exactly what we needed. The test is comprised of many components and the main problem is that we are missing swabs.”
    National Public Health Surveillance Laboratory, Lithuania: “The reagent kits have been shipped out but have not yet arrived. Supply chains are breaking down. We are following the situation and trying to coordinate.”
    Metropolis Health Ltd, (registered lab offering tests) India: “Since resources are limited, including protection equipment for sample collectors and reagents, we have decided to prioritise testing to those who are most at need.”
    Virology Laboratory at Italy’s National Institute for Infectious Diseases, European Commission Coronavirus Advisory Group: “major companies that provide the reagents that labs need to analyze tests are reaching “the maximum of their capacity,” said Capobianchi, noting there’s also a need for more swabs for collecting samples. “I don’t know how long they would require to scale up their capacity,” she said of reagent producers.”

Alastair Campbell, who regularly mimicked Peston's habit of flicking back his hair, once responded to a question with the words: "Another question from the Peston school of smartarse journalism"

The laddie is not so smart after all.
His original tweet
Robert Peston
@Peston
.@michaelgove
said just now that the difficulty in increasing number of #COVID19 tests was due to a shortage of the relevant "chemcial reagents". Well I've just talked to the Chemical Industries Association, which represents the UK's very substantial chemicals industry. It...
6:53 pm · 31 Mar 2020·Twitter Web App