Respiratory Syncytial Virus (RSV) Antibody Response Probe (Serum/Plasma)
This test measures your immune response to the respiratory syncytial virus (RSV), a common virus that can cause respiratory infections in infants, children, and adults.
["Assesses how your body recognizes and fights RSV infection."]
Key facts at a glance
- LOINC
- 92131-2
- Short code
- RSV RNA Resp Ql NAA+probe
- Synonyms
- RSV RNA Resp Ql NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- 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
This test measures the levels of specific substances in your body, helping your healthcare provider evaluate how well certain organs and systems are functioning and identify any abnormalities that may need further evaluation or treatment.
The test detects antibodies produced by your immune system in response to RSV exposure. These antibodies help your body identify and neutralize the virus. Antibody levels can indicate past infection, vaccination response, or ongoing immunity.
Your doctor may recommend this test if you are experiencing certain symptoms, managing a chronic condition that requires ongoing monitoring, or completing a routine checkup to screen for potential health concerns before they become more serious.
Doctors may order this test if you have symptoms of RSV infection (such as cough, fever, or difficulty breathing), if you’re at high risk for severe illness (like infants, elderly adults, or those with weakened immune systems), or if you’ve been exposed to RSV recently.
A small sample, usually blood or urine, will be collected by a trained professional at a laboratory or clinic. Depending on the test, you may need to fast for several hours or avoid certain foods, drinks, or medications beforehand, so follow your provider's instructions closely.
A blood sample is taken from a vein in your arm. The blood is processed to separate serum or plasma, which is then tested for RSV antibodies. This process is quick and typically done in a lab.
Before the test, your healthcare provider will review your medical history, explain the procedure, and answer any questions you may have. Be sure to mention all medications and supplements you take, and follow every preparation guideline to help ensure accurate results.
No special preparation is needed. You may have some mild discomfort from the needle, but it usually goes away quickly. If you’re on blood-thinning medication or have a bleeding disorder, let your doctor know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
RSV Antibody Test
Frequently asked questions
High antibody levels suggest past RSV infection or vaccination, indicating immunity. Low or absent levels may mean you haven’t been exposed recently or lack immunity. This test can help guide decisions about vaccination, monitoring, or treatment for RSV-related conditions.
No fasting is required for this blood test.
Results are interpreted by your healthcare provider based on your medical history and symptoms. Antibody levels alone don’t diagnose RSV; they’re used alongside clinical findings.
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