Eh not really, these aren’t measurements these are for the most part binary tests the current assays seem to trigger on AB’s for multiple coronavirus strains an

Eh not really, these aren’t measurements these are for the most part binary tests the current assays seem to trigger on AB’s for multiple coronavirus strains and even worse other common viruses. Without knowing the specificity and sensitivity of this specific test you can’t say any “inaccurate guesses” based on it is an upgrade. Say the test has really poor sensitivity but 100% specificity then sure it might not identify a lot of past infections but it won’t produce false positives so which ever figures come out you can extrapolate of them fairly easily. If it has terrible specificity then it’s a whole other problem unless you have additional tests that have high specificity that you can use to exclude false positives.