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Respiratory Syncytial Virus (RSV) Antibody, Qualitative, Throat Swab

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

This test detects antibodies to respiratory syncytial virus (RSV) in a throat swab sample. Antibodies are part of your immune system’s response to infection.

Quick summary

["This test helps determine if you’ve been exposed to RSV, which can cause respiratory infections in both children and adults."]

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

Key facts at a glance

LOINC
108601-6
Short code
RSV Ag Msmt Throat
Synonyms
RSV Ag Msmt Throat
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

What Is This Test Measuring?

The test looks for the presence of antibodies specific to RSV in your throat swab. Antibodies are proteins your body produces in response to a virus, like RSV, to help fight it off. This test is qualitative, meaning it only tells you whether antibodies are present or not, rather than how much.

Why Might You Need This Test?

A throat swab RSV antibody test may be recommended if you have symptoms of a respiratory infection, such as coughing, runny nose, fever, or difficulty breathing. It can also be used in certain high-risk groups, such as infants, elderly individuals, or those with weakened immune systems, to assess exposure to RSV.

How Is the Test Performed?

A healthcare provider will collect a sample from your throat using a swab. The swab is then sent to a lab for testing. The test does not require fasting or special preparation.

What Are the Possible Results?

The result will either be positive (indicating the presence of RSV antibodies) or negative (indicating no detectable antibodies). A positive result suggests past exposure to RSV, while a negative result means no antibodies were found in the sample at the time of testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

RSV Antibody (Qualitative)

Frequently asked questions

What does a positive result mean?
A positive result means your body has produced antibodies against RSV, indicating that you have likely been exposed to the virus in the past. This does not necessarily mean you currently have an active infection, but it confirms your immune system has recognized RSV.
Can this test be used to diagnose an active RSV infection?
No, this test is not used to diagnose an active RSV infection. It only detects antibodies, which are produced after exposure. For diagnosing an active infection, healthcare providers typically use other tests, such as rapid antigen tests or viral PCR tests.
How soon after exposure can I expect to get a positive result?
Antibodies to RSV typically develop within a few weeks after exposure. However, the exact timing can vary. If you suspect recent exposure, it may be best to retest after a few weeks to see if antibody levels change.
  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