Viral Throat and Nasopharyngeal Swab for Detection of Respiratory Viruses (Multiplex PCR)
This test checks for common viruses that can cause colds, flu, or respiratory infections by examining throat and nasal swabs. It helps doctors identify the specific virus causing your symptoms.
["A fast way to pinpoint which virus may be making you sick, aiding quicker treatment or isolation advice."]
Key facts at a glance
- LOINC
- 31963-2
- Short code
- RUBV Ag Throat Ql
- Synonyms
- RUBV Ag Throat Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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
Your doctor may order this test to help find or confirm a specific medical condition, or to check how well a treatment is working. The results give your care team important information about your health, so they can choose the right treatment plan and next steps for you.
Your doctor may recommend this test if you have symptoms like sore throat, cough, fever, or breathing difficulties. It’s often used in outbreaks, during flu season, or when other tests aren’t available. The test looks for viruses like RSV, influenza, adenovirus, or others that can spread easily in groups like schools or hospitals.
This test works by measuring certain substances in your body that may signal a health problem. A laboratory analyzes your sample with specialized equipment, and your results are compared against established reference ranges to show whether your levels are normal or need further attention.
A swab is gently inserted into your throat and nose to collect samples. These samples are then tested in a lab using a special technique called PCR (Polymerase Chain Reaction) to detect viral genetic material. This method is highly sensitive and can identify viruses even when symptoms are mild.
A trained healthcare professional will collect your sample during a quick, simple procedure at a clinic, hospital, or laboratory. The collection usually takes only a few minutes. Depending on the type of sample needed, you may feel brief, mild discomfort, such as a small pinch or slight pressure.
The swab procedure is quick and usually painless. You may feel a slight tickle or discomfort, but it doesn’t require any special preparation. The sample is collected by a healthcare provider and sent to the lab for analysis.
After your sample is collected, you can usually return to your normal activities right away. Your results are typically ready within a few days. Your doctor will review them with you, explain what they mean for your health, and discuss any follow-up testing or treatment that might be needed.
Results are typically available within 24 to 72 hours, depending on lab processing times. You’ll receive a call or email with your results from your doctor’s office. If the test is positive, follow your doctor’s guidance on next steps, such as isolation or treatment options.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Viral throat/nasopharyngeal PCR panel
Frequently asked questions
This test helps doctors diagnose respiratory infections early, which can prevent the spread of viruses to others. Knowing the specific virus can also guide treatment choices, such as antiviral medications for certain viruses like influenza.
A positive result indicates the presence of a virus in your throat or nasal samples. This means you likely have an infection caused by that virus. Your doctor will discuss the next steps, which may include isolating yourself to prevent spreading the virus to others or recommending specific treatments.
Currently, most viral throat/nasopharyngeal PCR tests are performed in a clinical setting by a healthcare provider. At-home tests for respiratory viruses are available but may not cover the same range of viruses or provide the same level of accuracy as lab-based tests.
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