RSV A, RSV B Viral Load Quantitative Test
Short Name: RSV A/B Viral Load
Also known as: RSV Quantitative PCR, RSV A/B Viral Load, Respiratory Syncytial Virus Quantification
RSV A, RSV B Viral Load Quantitative Test test available at DNA Labs India for ₹11,560. Uses Real-Time PCR (RT-PCR) on Bronchial Swab, Bronchial Lavage, Sputum, Nasopharyngeal (NP) aspirates and swabs in viral transport medium, or lung tissues samples. Results in Reports are available on the 4th working day. Email reports within 48 hours, phone within 36 hours.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Kothari Ramesh Shantilal
Consultant Microbiologist · Reg: 27670
Last reviewed: September 7, 2026
Overview
The primary purpose of this test is to detect and quantify RSV A and RSV B viral RNA in respiratory secretions. It aids in diagnosing acute RSV infection, distinguishing it from other respiratory viruses, and monitoring viral load in high-risk patients. Quantitative results help clinicians assess disease severity, predict clinical course, and evaluate the effectiveness of antiviral treatment. The test is also valuable for epidemiological surveillance and outbreak management.
- Test Code
- 6241
- CPT Code
- 87798
- ICD Code
- B97.4
- Price
- ₹11,560
- Sample Type
- Bronchial Swab, Bronchial Lavage, Sputum, Nasopharyngeal (NP) aspirates and swabs in viral transport medium, or lung tissues
- Result Time
- Reports are available on the 4th working day. Email reports within 48 hours, phone within 36 hours.
- Fasting Required
- No
- Method
- Real-Time PCR (RT-PCR)
Sample Collection
No special preparation required. Inform your doctor about any medications or recent antiviral therapy. A consent document must be signed.
Method: Nasopharyngeal swab, bronchial lavage, or sputum collection
Laboratory Analysis
A healthcare professional will collect a respiratory sample (nasopharyngeal swab, sputum, or bronchial lavage) using sterile techniques. The procedure is quick and may cause mild discomfort.
Report Delivery
No specific precautions. You can resume normal activities immediately. The sample will be transported to the laboratory in appropriate viral transport medium.
Timeline: Reports are available on the 4th working day. Email reports within 48 hours, phone within 36 hours.
Patient Instructions
About This Test
Who Should Get This Test
The primary purpose of this test is to detect and quantify RSV A and RSV B viral RNA in respiratory secretions. It aids in diagnosing acute RSV infection, distinguishing it from other respiratory viruses, and monitoring viral load in high-risk patients. Quantitative results help clinicians assess disease severity, predict clinical course, and evaluate the effectiveness of antiviral treatment. The test is also valuable for epidemiological surveillance and outbreak management.
How to Prepare
- For nasopharyngeal swab: Insert swab into nostril parallel to palate, leave in place for a few seconds, then rotate and withdraw.
- For sputum: Collect early morning sample in a sterile container after rinsing mouth with water.
- For bronchial lavage: Performed by a healthcare professional during bronchoscopy.
- Ensure sample is placed in viral transport medium immediately after collection.
Doctor's Notes
Reviewed by Dr Kothari Ramesh Shantilal — MBBS, MD (Microbiology) · Reg. No. 27670
"Quantitative RSV viral load helps differentiate mild upper respiratory infection from severe lower respiratory involvement, guiding antiviral and supportive therapy decisions."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Sample not in viral transport medium
- Insufficient quantity
- Leaked or broken container
- Improper labeling
- Sample received after prolonged delay without proper storage
Understanding Your Results
No RSV RNA detected. Active RSV infection is unlikely, but clinical correlation is advised.
RSV present with low viral burden. May indicate early infection or resolving infection. Monitor clinically.
RSV present with high viral burden. Likely active infection with potential for severe disease. Initiate appropriate management.
Consult a doctor immediately if you or your child experience difficulty breathing, wheezing, high fever, or signs of dehydration. Early medical intervention can prevent complications.
Limitations
- ⚠A negative result does not completely rule out RSV infection if sample quality is poor
- ⚠Viral load may not correlate directly with disease severity in all patients
- ⚠Test cannot differentiate between RSV A and B if both are present (though this test does)
- ⚠Quantitative results should be interpreted in clinical context
Risks & Considerations
- ●Mild discomfort during sample collection
- ●Minor bleeding from nasal swab (rare)
- ●No significant systemic risks
Interfering Factors
- ●Improper sample collection or storage may degrade viral RNA
- ●Presence of inhibitors in respiratory specimens (e.g., mucus) can affect PCR
- ●Recent antiviral therapy may reduce viral load
- ●Co-infection with other respiratory viruses may complicate interpretation
Compare With Similar Tests
| Test | RSV A, RSV B Viral Load Quantitative Test | RSV Antigen Test | Influenza A/B PCR | COVID-19 RT-PCR | Respiratory Panel PCR |
|---|---|---|---|---|---|
| Comparison | RSV A, RSV B Viral Load Quantitative Test |
Frequently Asked Questions
What is the cost of the RSV A/B Viral Load test?
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Do I need to fast before the test?
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Is home sample collection available?
What is the difference between RSV A and RSV B?
Can this test differentiate RSV from other respiratory viruses?
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We serve as a reference laboratory for hospitals and clinics across India. Send samples from your facility with same-day pickup, priority processing, and results delivered through our online portal. Competitive institutional pricing available.
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✓ Stored in India: All patient records are stored on servers located in India. No data is transferred outside the country.
✓ DPDP Act Compliant: Under the Digital Personal Data Protection Act 2023, you can request deletion of your records at any time by contacting support.
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