Negative. • Presumptive negative (this means we. assume you do not have COVID-19). • If you have symptoms: • You should isolate until your negative test result is confirmed.

What is meant by "presumptive positive cases" for the coronavirus disease?

A presumptive positive result is when a patient has tested positive by a public health laboratory, but results are pending confirmation at CDC. For public health purposes, a presumptive positive result using the CDC test is treated as a positive.

What does a negative COVID-19 antigen test result mean in asymptomatic persons?

Negative test results using a viral test (NAAT or antigen) in asymptomatic persons with recent known or suspected exposure suggest no current evidence of infection. These results represent a snapshot of the time around specimen collection and could change if tested again in one or more days.