Nucleic Acid Detection in Sputum by Probe-Based Molecular Assay (for Pneumonia Pathogens)
This test checks for specific bacteria or viruses that may cause pneumonia by analyzing a sample of your mucus from your lungs. It helps identify infections that may require targeted treatment.
["This test helps doctors pinpoint the cause of pneumonia for better treatment planning."]
Key facts at a glance
- LOINC
- 92949-7
- Short code
- S pneum DNA BAL NAA+non-prb-NCncRng
- Synonyms
- S pneum DNA BAL NAA+non-prb-NCncRng
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- non-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 detects the genetic material (nucleic acids) of common pathogens linked to pneumonia, such as bacteria like *Streptococcus pneumoniae*, *Haemophilus influenzae*, or viruses like influenza or respiratory syncytial virus. A positive result indicates the presence of these organisms in your sputum sample.
How the Test Works
A small sample of your sputum is collected and processed using a molecular technique (probe-based assay). This method is highly sensitive and specific, allowing for quick identification of pathogens that may not be visible under a microscope.
Preparation for the Test
No special preparation is needed. You may expect to cough into a sterile container provided by your healthcare provider. If you have difficulty producing sputum, your doctor may guide you on proper collection techniques or suggest alternative methods.
When This Test Might Be Ordered
Your doctor may recommend this test if you have symptoms of pneumonia, such as cough, fever, chest pain, or difficulty breathing, especially if you’re at higher risk for severe infections (e.g., older adults, those with weakened immune systems, or chronic illnesses).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is crucial for guiding antibiotic or antiviral treatment decisions. Identifying the exact pathogen allows healthcare providers to prescribe the most effective medication, reducing unnecessary antibiotics and improving recovery outcomes. It also helps monitor treatment response and detect resistant strains early.
Short name
Pneumonia Pathogen Detection (Sputum)
Frequently asked questions
Why might my doctor order this test?
What does a positive result mean?
What if my test results are negative?
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