Skip to content

Respiratory Syncytial Virus (RSV) Antigen Rapid Test

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

This test detects the presence of respiratory syncytial virus (RSV) in your nasal secretions using a rapid immunoassay method.

Quick summary

["A quick way to check if RSV is causing your symptoms."]

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

Key facts at a glance

LOINC
112294-4
Short code
RSV Ag Nose Ql IA.rapid
Synonyms
RSV Ag Nose Ql IA.rapid
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia-rapid
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 This Test Measures

The test identifies RSV antigens, which are proteins produced by the virus. These proteins appear in your nasal passages when RSV is active, helping doctors determine if RSV is the cause of your respiratory symptoms.

How the Test Works

A small sample of your nasal fluid is collected using a swab. The swab is then applied to a test device that uses immunoassay technology to detect RSV antigens within about 15 minutes. A positive result indicates active RSV infection.

When You Might Need This Test

Your healthcare provider may recommend this test if you have symptoms like coughing, wheezing, or difficulty breathing, especially if you are a young child, elderly adult, or have a weakened immune system.

What to Expect Before the Test

No special preparation is needed. You may be asked to blow your nose gently before the test to clear excess mucus, but this is not always required.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

RSV Antigen Test

Frequently asked questions

This test helps confirm RSV infection quickly, which is important for managing symptoms, especially in high-risk groups. Early identification can guide treatment decisions and prevent potential complications.
This test is not used to diagnose other respiratory infections like colds or flu. It only checks for RSV.
The test results are typically available immediately after the sample is applied to the device.
If you get a positive result, follow your healthcare provider’s advice for managing symptoms and possible further testing or treatment.
False positives are rare, but if you are unsure about the result, discuss it with your doctor.
This test uses a nasal swab, which may cause mild discomfort or irritation. If you experience severe discomfort, inform your healthcare provider.
  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