Total Tests represents the total number of testing samples that Olin has sent to the Broad Institute.

Total Positive represents the total number of testing samples that have returned a positive result.

Total Invalid/Inconclusive represents the total number of testing samples that that have returned an invalid or inconclusive result. Typically this happens if the swab fails to collect enough genetic material to produce a result or if there is a testing error of some kind (e.g., the test sample is accidentally dropped during laboratory processing).

Percent Positive represents Total Positive divided by Total Tests.