** Medical devices maker Atomo Diagnostics' AT1.AX shares
soar 59.3% to A$0.22, set for their best single-day performance
on record
** Says COVID-19 antibody test developed with S.Korea's
Access Bio Inc 950130.KQ gets emergency use authorization from
the U.S. Food and Drug Administration urn:newsml:reuters.com:*:nFWN2O70YD
** Says both companies are discussing commercial
arrangements for the rapid test's launch
** Stock at its highest level since May 7
** About 15.5 mln shares change hands, 14x the 30-day
average volume, in their busiest trading day since May 2020
** Access Bio shares are up 4.7%, as of 0323 GMT
((rushil.dutta@thomsonreuters.com))