Skip to content

Respiratory Syncytial Virus (RSV) Upper Respiratory Tract Viral Load (Qualitative)

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

This test detects the presence of respiratory syncytial virus (RSV) in your upper respiratory samples, such as nasal swabs or secretions. It helps identify if RSV is causing an infection.

Quick summary

["A positive result may indicate an RSV infection needing further evaluation or treatment."]

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

Key facts at a glance

LOINC
91785-6
Short code
RSV Upper resp Ql Cult
Synonyms
RSV Upper resp Ql Cult
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
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 to diagnose RSV infections in children or adults with symptoms like coughing, sneezing, or runny nose. RSV is a common virus that often causes mild illness but can be serious in infants, young children, or those with weakened immune systems.

What to Expect Before the Test

You’ll likely have a nasal swab or sample of mucus collected from your nose or throat. No special preparation is needed, but inform your provider if you’re taking medications that might affect test results.

What the Test Results Mean

A positive result means RSV is present in your sample. A negative result suggests no detectable virus. Follow-up testing or additional care may be recommended based on symptoms and clinical judgment.

Possible Risks and Considerations

Minimal risks include mild discomfort from the swab or sample collection. There are no known serious risks from this test. Results may not be available immediately and could take 1–3 business days.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

RSV is a leading cause of respiratory illness, particularly in infants, young children, and older adults. Early detection can guide treatment decisions, especially in high-risk groups. This test helps differentiate RSV-related symptoms from other causes, such as allergies or bacterial infections.

Short name

RSV Upper Respiratory Screen

Frequently asked questions

What does a positive RSV test mean for my health?
A positive result confirms RSV infection, which may require monitoring or supportive care. Your healthcare provider will assess symptoms and risk factors to determine next steps, such as managing symptoms or recommending preventive measures for others.
Can I still spread RSV if my test is negative?
Even if your test is negative, RSV can still be contagious. Practice good hygiene—wash hands frequently, avoid close contact with sick individuals, and cover coughs/sneezes to prevent spreading the virus.
How long does it take to get results after the test?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up with your provider if you have concerns about delayed results or need clarification.
  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