Rapid Detection of Respiratory Syncytial Virus Does this test
have other names? RSV rapid detection, RSV indirect
immunofluorescence assay, IFA What is this test? This test looks
at cells taken from fluid in your nose or throat to see if you
have respiratory syncytial virus (RSV). RSV attacks the upper
respiratory tract. This test looks for antigens in these nose or
throat cells to quickly diagnose an infection. An antigen is a
substance in the virus that causes your body's immune system to
make antibodies. The test is accurate 80 to 90 percent of the
time. If you have RSV, you can spread it to others through
coughing and sneezing for about 10 days after your symptoms
start. Once you have been infected, you are less likely get it
again. If you do, your symptoms are likely to be milder. If your
symptoms are severe, you may be treated with a medication called
ribavirin. Why do I need this test? You may need this blood test
if you have symptoms of RSV and you are at risk for a serious
infection. Symptoms of RSV