covid test kit

'Positive' and 'negative' control swabs in Covid-19 test kits only used for quality control, experts say

Published on 22/04/2021 at 04:07

An image purporting to show components of a Covid-19 test kit has been shared in multiple posts on Facebook alongside a claim that the “positive” and “negative” control swabs are proof that test results are “fixed” in advance. The claim is false: the swabs shown in the image are used to maintain quality control, not for patient testing, experts say.