RSV antibody test - Results
Respiratory syncytial virus antibody test; RSV serology
A negative test means the person does not have antibodies to RSV in the blood. This means the person has never had an RSV infection.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
What abnormal results mean:
A positive test means the person has antibodies to RSV in the blood. These antibodies may be present because:
- A positive test in people older than infants means there is a current or past infection with RSV. Most adults and older children have had an RSV infection.
- Infants may have a positive test because antibodies were passed from their mother to them before they were born. This may mean they have not had a true RSV infection.
- Some children younger than 24 months get a shot with antibodies to RSV to protect them. These children will also have a positive test.
- Reviewed last on: 2/19/2011
- David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Denis Hadjiliadis, MD, Assistant Professor of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Pennsylvania, Philadelphia, PA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
Breese HC. Respiratory syncytial virus. In: Mandell GL, Bennett JE, Dolin R, eds. Mandel, Douglas, and Bennett's Principles and Practice of Infectious Disease. 7th ed. Philadelphia, Pa: Saunders Elsevier; 2009:chap 158.
Walsh EE. Respiratory syncytial virus. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 385.
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