They are emergency authorized for verifying prior infection, though. As far as I can tell, they constitute medical proof of natural immunity in some capacity, but the test itself can’t tell you to what extent that natural immunity is protective.
However, the studies I looked at on natural immunity show it seems to be about 80% effective at preventing infection, median 7 months after infection (https://pubmed.ncbi.nlm.nih.gov/33844963/), so that + an anti-body test to confirm I really had it seems sufficient.
They are emergency authorized for verifying prior infection, though. As far as I can tell, they constitute medical proof of natural immunity in some capacity, but the test itself can’t tell you to what extent that natural immunity is protective.
However, the studies I looked at on natural immunity show it seems to be about 80% effective at preventing infection, median 7 months after infection (https://pubmed.ncbi.nlm.nih.gov/33844963/), so that + an anti-body test to confirm I really had it seems sufficient.