The latest coronavirus antibody test is a lot more accurate (100% accurate at detecting antibodies)

[Igel]

13. Yippee.

This falls into the "not much of a problem" category.

If you get the test done and it comes back negative when you've been infected, it's inconvenient.

If it comes back positive when you haven't been infected it means you could easily become infected.

10k false negatives would affect worker productivity and lifestyle, maybe just mean wear a mask, maybe mean stay at home.

The COVID PCR tests for active infection are potentially more important. If you get a false negative, you're releasing somebody infectious back into the population. This isn't a big deal when we're not down to virtually no new cases and transmission is widespread.

PCR tests that come back false positive are potentially more important but only in specific situations. If it means you self-isolate at home for a couple of weeks, again, it's inconvenient. If you're in a place where you'd immediately quarantined with possibly infectious sufferers, it all but guarantees you'd become infected.