Respiratory Viral RNA (Lower Respiratory Tract) Qualitative Probe
This test detects the presence of respiratory viruses in a sample from your lower respiratory tract, such as a sputum or bronchoalveolar lavage sample. It helps identify infections that may require medical attention.
["This test can help determine if a viral infection is causing your respiratory symptoms."]
Key facts at a glance
- LOINC
- 91823-5
- Short code
- RUBV RNA Lower resp Ql NAA+probe
- Synonyms
- RUBV RNA Lower 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
What This Test Measures
The test uses a molecular probe to detect genetic material (RNA) from common respiratory viruses, including those that cause colds, flu, or other infections. It does not measure virus levels or identify the specific virus type beyond confirming its presence.
How the Test Works
A sample from your lower respiratory tract is collected and analyzed using a specialized probe to detect viral RNA. Results are qualitative, meaning they only indicate whether the virus is present or not.
Sample Collection and Preparation
Your healthcare provider will collect a sample, such as sputum or fluid from your lungs, to test for respiratory viruses. This process may involve procedures like bronchoscopy or sputum induction.
Common Uses
This test is primarily used to diagnose respiratory infections in patients with symptoms such as cough, shortness of breath, or fever, especially when other tests are inconclusive or symptoms persist.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Viral RNA in Lower Resp Probe
Frequently asked questions
This test helps guide treatment decisions by confirming the presence of a viral infection, which can influence whether antibiotics are needed or if antiviral medications should be considered. It also supports monitoring for severe cases or complications.
Your doctor may recommend this test if you have persistent or severe respiratory symptoms, if other tests (like a chest X-ray or blood tests) are inconclusive, or if you are at higher risk for complications from respiratory infections.
Positive results indicate the presence of respiratory viruses in your sample. Negative results mean no detectable virus was found in this test. Follow-up testing or additional samples may be needed if symptoms continue.
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