Influenza Virus Nucleic Acid Detection by Qualitative Probe (Serum/Plasma)
This test checks for the presence of genetic material from the influenza virus in your blood. It helps determine if you may have an infection caused by one of the flu strains.
["A quick way to identify possible flu infection from a blood sample."]
Key facts at a glance
- LOINC
- 49521-8
- Short code
- FLUAV H1 RNA Spec Ql NAA+probe
- Synonyms
- FLUAV H1 RNA Spec 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
How the Test Works
The test uses a molecular probe to detect specific genetic sequences (RNA) from influenza viruses. If the virus is present, the probe binds to its genetic material, confirming infection. This method is highly sensitive and specific for detecting recent or active flu exposure.
What to Expect Before the Test
No special preparation is needed. You may have a small blood sample drawn from your arm. If you’re taking blood-thinning medications or have bleeding disorders, let your healthcare provider know beforehand.
Possible Results and Interpretation
A positive result means the test detected influenza RNA, suggesting you may have an active flu infection. A negative result means no detectable virus was found in this sample, but flu could still be present in other body fluids or you may not have an active infection at this time.
When This Test Might Be Ordered
Your doctor may recommend this test if you have flu-like symptoms (fever, cough, fatigue) and suspect influenza, especially during flu season or after exposure to someone with the flu.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: This test is critical for diagnosing influenza early, allowing for prompt treatment with antiviral medications that can reduce severity and shorten illness duration. It also supports public health efforts by identifying outbreaks and guiding preventive measures.
Short name
Influenza RNA Test (Qualitative)
Frequently asked questions
Why did my doctor order this test?
What does a positive result mean for my health?
Can I still get the flu after testing 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