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Viral RNA Detection in Respiratory Specimen by Nucleic Acid Amplification Test

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

This test checks for the presence of viruses in your respiratory secretions, such as nasal or throat swabs, using a highly sensitive molecular method. It helps identify common viruses that may cause colds, flu, or other respiratory infections.

Quick summary

["This test helps determine if a viral infection is present to guide treatment and management."]

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

Key facts at a glance

LOINC
50707-9
Short code
FLUAV PB1 cDNA Islt Ql Seq
Synonyms
FLUAV PB1 cDNA Islt Ql 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

How the Test Works

The test extracts genetic material (RNA) from any viruses present in your sample. Specialized equipment then amplifies and detects these viral sequences, allowing for precise identification of specific viruses. This method is highly sensitive and can detect even small amounts of viral RNA.

What to Expect Before the Test

No special preparation is needed. You may have a nasal or throat swab collected by a healthcare provider. If you’re having symptoms like coughing, sneezing, or sore throat, this test can help determine if a virus is responsible.

Common Viruses Detected

This test can identify a wide range of respiratory viruses, including but not limited to influenza (flu), respiratory syncytial virus (RSV), rhinovirus, adenovirus, coronavirus, and others. The exact viruses detected may vary based on the testing panel used.

When You Might Need This Test

Your doctor may recommend this test if you have symptoms of a respiratory infection, especially if you’re at higher risk for complications (e.g., young children, elderly adults, or those with weakened immune systems). It can also be used to confirm a suspected viral illness in clinical settings.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Respiratory Virus PCR

Frequently asked questions

This test plays a crucial role in diagnosing viral infections early, allowing for timely treatment and reducing the spread of contagious viruses. Accurate identification helps healthcare providers tailor care, such as isolating infected individuals or recommending antiviral medications if appropriate.
This test is not used to diagnose bacterial infections or provide a definitive cause for symptoms like fever or fatigue. It focuses specifically on viral pathogens.
How long does it take to get results from this test?
Results are typically available within 24 to 48 hours, depending on the laboratory’s processing time and the specific testing protocol. Your healthcare provider will contact you once results are ready.
Can I have this test if I’m pregnant?
Yes, this test is generally safe during pregnancy. However, always discuss your specific situation with your healthcare provider before undergoing any medical tests.
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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