In France, the massive deployment of antigen tests has been organized by the government to complete the diagnostic arsenal. However, competent authorities did not factor in the doubts voiced by learned societies on the highly targeted specification of these tests. Indeed, a vast majority of biology laboratories alerted the authorities of the sensitivity and specificity flaws of these tests against RT-PCR, by relying on internal studies and studies executed in a hospital environment. A study on Antigen tests reality by Biogroup.
Massive use of these test by health professionals without a proper medical biology training, the lack of skills in pre-analytical phases (execution of swabbing, identity monitoring, etc), analytics (control of the execution conditions of the test according to strict recommendations from the supplier: temperature, playback time, etc) and post-analytical (results interpreted on a summary, document normally opposable) seem to be aggravating factors of bad performances obtained with these tests.
The data is shown in the table below: