Blood oxygen devices that do not meet UK legal standards have been sold on the web, an investigation has found. Amazon and eBay are among the big online retailers who sold the ‘unfit’ machines.

Amazon (AMZN), eBay and Wish have removed a number of blood oxygen testing devices from their platforms after concerns that the products were not legally fit for sale in the UK.

Blood-oxygen tests that falsely claimed to be 'NHS-approved' have been removed from Amazon, eBay and Wish following an investigation by a consumer watchdog. Pulse oximeters became popular during ...