NHS medical conditions like cancer and heart disease. Swiss pharmaceutical firm, Roche, said problems arose following a move to a new warehouse and it could take two weeks to fix the issue.
The supply chain failure has led to a "very significant" drop in its processing capacity of swabs and testing equipment. One NHS trust has advised GPS to stop all non-urgent blood tests, according to the BBC.
The firm has said they're prioritising dispatching Covid-19 and antibody tests. In a statement, Roche said: "We deeply regret that there has been a delay in the dispatch of some products."We are prioritising the dispatch of Covid-19 PCR (diagnostic) and antibody tests and doing everything we can to ensure there is no impact on the supply of these to.