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Respiratory Syncytial Virus Antibody, Serum (Qualitative)

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of antibodies to respiratory syncytial virus (RSV) in your blood. Antibodies are your body’s immune response to a virus.

Quick summary

["This test helps determine if your immune system has ever been exposed to RSV."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
30147-3
Short code
RSV Ab sp1 Ser Ql
Synonyms
RSV Ab sp1 Ser Ql
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 Is This Test Done?

Your healthcare provider may order this test if you have symptoms like a runny nose, cough, or fever that could be caused by RSV, especially if you’re in a high-risk group (e.g., infants, older adults, or those with weakened immune systems). It can also be used to monitor immunity in certain populations.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw a blood sample. The process usually takes a few minutes.

What the Test Results Mean

If antibodies are detected, it means your body has made an immune response to RSV, possibly from past infection. If no antibodies are found, it suggests you haven’t been exposed to RSV recently or at all.

Possible Results and Next Steps

If positive, further evaluation may be needed to rule out other causes of symptoms. If negative, additional testing or monitoring might be recommended depending on your clinical situation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is primarily used for screening or confirming past exposure to RSV rather than diagnosing an active infection. It’s particularly useful in identifying individuals who may benefit from preventive measures or monitoring, such as those in high-risk groups or those who have had RSV-related complications in the past.

Short name

RSV Antibody (Qualitative)

Frequently asked questions

What does a positive result mean?
A positive result indicates your body has produced antibodies against RSV, meaning you likely had an infection in the past. This doesn’t necessarily mean you’re currently infected, but it shows your immune system has recognized and responded to the virus.
Can this test be used to diagnose an active RSV infection?
No, this test is qualitative and checks for past exposure, not active infection. For diagnosing an active RSV infection, other tests like viral testing (e.g., nasopharyngeal swab) are typically used.
Is there any risk or discomfort with this blood test?
There’s a minor risk of bruising, slight pain, or swelling at the injection site. Most people experience only mild discomfort, and the test itself is quick and well-tolerated.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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