Respiratory Syncytial Virus Antibody, Titration (Serum/Plasma)
This test measures the amount of antibodies your body produces in response to the respiratory syncytial virus (RSV), a common virus that can cause respiratory infections.
["This helps doctors track your immune response to RSV over time."]
Key facts at a glance
- LOINC
- 22466-7
- Short code
- RSV Ab Titr Ser
- Synonyms
- RSV Ab Titr Ser
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Doctors may order this test if you’ve been exposed to RSV or have symptoms like a runny nose, cough, or fever, especially if you’re at higher risk for severe illness. It can also be used to monitor treatment responses or assess long-term immunity.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test looks for antibodies that your immune system creates after infection or vaccination.
What the Results Mean
Results show the level of RSV antibodies in your blood. Higher levels may indicate past infection or vaccination, while lower levels suggest no recent exposure or immunity. Your doctor will interpret these results in the context of your health and symptoms.
Possible Risks and Side Effects
The most common side effect is a mild bruise or soreness at the injection site. Rarely, there may be a slight reaction like redness or swelling. Most side effects are minor and go away quickly.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test helps determine if your body has developed immunity to RSV, which is important for people at risk of severe illness, such as infants, elderly adults, or those with weakened immune systems. It can also guide decisions about vaccination or booster doses if needed. Results may also be used in research or clinical trials to study RSV exposure and immunity.
Short name
RSV Antibody Level Test
Frequently asked questions
How long does it take to get RSV antibody test results?
Can I get RSV antibodies from a vaccine?
What if my RSV antibody levels are low?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy