Fluorescent Polymerase Chain Reaction (PCR) for Viral Nucleic Acid Detection (Serum/Plasma)
This test detects genetic material from certain viruses in your blood. It helps confirm if you have an infection caused by these viruses.
["PCR testing can identify viral infections that may not show symptoms yet."]
Key facts at a glance
- LOINC
- 50711-1
- Short code
- FLUAV polymerase RNA Islt Seq
- Synonyms
- FLUAV polymerase RNA Islt Seq
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- sequencing
- 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 specialized technique called polymerase chain reaction (PCR) to identify tiny amounts of viral genetic material (RNA) in your blood. This method is highly sensitive and can detect even small traces of infection.
How the Test Works
A small blood sample is taken and analyzed to check for specific viral RNA sequences. The PCR process amplifies these sequences, making them detectable even if present in very low quantities.
Common Uses
This test is often used to diagnose infections caused by viruses such as influenza, coronaviruses, or other respiratory pathogens. It can also be used in research or monitoring for certain chronic viral conditions.
Sample Collection and Preparation
A blood sample is drawn from a vein, typically in your arm. The sample is then processed to extract viral RNA, which is analyzed using PCR technology.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Results from this test can confirm or rule out viral infections early in the disease process, which is crucial for initiating appropriate treatment, isolating individuals, and preventing further spread. Early detection can also guide decisions about preventive measures or further diagnostic testing.
Short name
Viral RNA Detection (PCR)
Frequently asked questions
What does a positive result mean?
How soon can I expect results?
Can I have false positives or false negatives?
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