Respiratory Syncytial Virus Antibody, Serum (Qualitative Immunoassay)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms of a respiratory infection, such as coughing, wheezing, or difficulty breathing, especially if you’re in a high-risk group (e.g., infants, elderly adults, or those with weakened immune systems). It can also be used to monitor immune responses in certain conditions.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw blood. The process usually takes a few minutes. If you’re pregnant or have a history of bleeding disorders, let your provider know before the test.

What the Test Results Mean

A positive result means your blood contains antibodies to RSV, suggesting past exposure or an immune response. A negative result means no detectable antibodies were found. This doesn’t confirm whether you currently have an active infection but can help guide further evaluation.

Possible Follow-Up Actions

If your test is positive, your provider may recommend additional testing (like a viral test) to check for an active infection. If negative, they might suggest other diagnostic tests or treatments based on your symptoms and medical history.