Serum Neutralization (SN) Antibody Titer Reporting Changes

Thursday, November 5, 2020

Virology Laboratory

Beginning January 1, 2021 antibody titers for all SN tests will move from being reported as a serum dilution 50% endpoint value, to being reported as final dilutions or endpoint titers. The final dilution endpoint titer is consistent with the reporting system used by most diagnostic laboratories across the country and this change will facilitate inter-laboratory titer comparisons. This is expected to facilitate SN titer interpretations as it will eliminate 50% endpoint antibody titers (i.e. 3, 6, 12, etc) from our result reports.