Health Library
RSV antibody test
Respiratory syncytial virus antibody test; RSV serology; Bronchiolitis - RSV test
Respiratory syncytial virus (RSV) antibody test is a blood test that measures the levels of antibodies (immunoglobulins) the body makes after an infection with RSV.
Images
I Would Like to Learn About:
How the Test is Performed
A blood sample is needed.
How to Prepare for the Test
No special preparation is needed.
How the Test will Feel
When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or slight bruising. This soon goes away.
Why the Test is Performed
This test is done to identify someone who has been infected by RSV recently or in the past.
This test does not detect the virus itself. If the body has produced antibodies against RSV, then either a current or past infection has occurred.
In infants, RSV antibodies that have been passed from mother to baby may also be detected.
Normal Results
A negative test means the person does not have antibodies to RSV in their blood. This means the person has never had an RSV infection.
What Abnormal Results Mean
A positive test means the person has antibodies to RSV in their 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 at high risk for RSV infection get a shot with antibodies to RSV to protect them. These children will also have a positive test.
Risks
There is little risk involved with having your blood taken. Veins and arteries vary in size from one person to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight, but may include:
- Excessive bleeding
- Multiple punctures to locate veins
- Fainting or feeling lightheaded
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
Related Information
Respiratory syncytial virus (RSV)Antibody
References
Crowe JE. Respiratory syncytial virus. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, Schor NF, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 287.
Hogan CA, Broadhurst MJ, Wang H, Pinsky BA. Viral infections. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Philadelphia, PA: Elsevier; 2022:chap 64.
BACK TO TOPReview Date: 1/22/2023
Reviewed By: Denis Hadjiliadis, MD, MHS, Paul F. Harron, Jr. Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
A.D.A.M., Inc. is accredited by URAC, for Health Content Provider (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics. This site complies with the HONcode standard for trustworthy health information: verify here. |
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- 2024 A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.