After extensive evaluation of available assays, COVID-19 serology testing is now available through Douglass Hanly Moir Pathology (DHM).
Currently, the main role of COVID-19 serology is in the retrospective diagnosis of disease. It may be useful when symptomatic individuals with suspected COVID-19 disease have not been tested by PCR for SARS-CoV-2 at the time of their illness, or when their result was negative or inconclusive. It can also identify those whose primary infection was asymptomatic.
While most infected individuals will have detectable antibody by the third week after symptom-onset, the longevity of the antibody response remains uncertain and its correlation with protective immunity has not been established.
A Medicare rebate is applicable to COVID-19 serology.