Health

Are At-Home Flu Testing Methods As Accurate as Lab Tests?


Several tests are available to detect influenza virus in respiratory specimens. The most common is called the “rapid influenza diagnostic test (RIDT).” RIDT works by detecting parts of the virus (antigens) that stimulate an immune response.

In addition to the RIDT, there are several more accurate flu tests available that must be performed in specialized laboratories, such as those found in a hospital or public health laboratory.

These tests include reverse transcriptase polymerase chain reaction (RT-PCR), viral cultures, and immunofluorescence assays.

“Home tests are a valuable tool to aid in the management of influenza and other diseases,” said Matthew J. Thompson, professor of global health and family medicine at the University of Washington School of Medicine in Seattle. other respiratory infections.

More than 600 Seattle area residents participated in the 2020 study from February through the end of May. Participants were mailed flu testing kits. After picking their nose, they record the results through an app or return the kit to a lab.

It was then determined that the sensitivity and specificity of the self-test was comparable to the influenza rapid diagnostic test used in clinical settings.

False-negative results are more common when self-testing is performed 72 hours after onset of symptoms, but are not associated with incomplete swab collection or disease severity.

This study highlights the urgency of expanding access to testing and reducing costs.

Source: Medindia



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