SARS-CoV-2 Neutralizing Antibody Test
Short Name: COVID-19 Neutralizing Antibody
Also known as: COVID-19 Neutralizing Antibody Test, SARS-CoV-2 NAb Test, SARS-CoV-2 Virus Neutralization Test
SARS-CoV-2 Neutralizing Antibody Test test available at DNA Labs India for ₹4,680. Uses Enzyme Immunoassay (EIA) on Serum samples. Results in Sample receipt by Mon/Thu 4 pm: report next day. Courier/online delivery may take additional hours.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr SULOCHANA HEMCHANDRA HOLLA
Consultant Medical Geneticist · Reg: 8532
Last reviewed: September 7, 2026
Overview
This assay is used to assess the capacity of antibodies in patient serum to inhibit the SARS-CoV-2 virus; to assess the efficacy of anti-SARS-CoV-2 vaccines; and for the screening of convalescent plasma for prophylactic and therapeutic use. It is not intended for the diagnosis of active COVID-19.
- Test Code
- 3623
- CPT Code
- 86408
- ICD Code
- Z86.16
- Price
- ₹4,680
- Sample Type
- Serum
- Result Time
- Sample receipt by Mon/Thu 4 pm: report next day. Courier/online delivery may take additional hours.
- Fasting Required
- No
- Method
- Enzyme Immunoassay (EIA)
Sample Collection
Duly filled Covid-19 Antibody Test Form (Form 45) is mandatory. No fasting is required. Please carry a valid ID and inform the technician of recent vaccination, prior COVID-19 infection, or use of immunosuppressive therapy.
Method: Venipuncture
Laboratory Analysis
A phlebotomist will collect approximately 3 mL (1 mL minimum) of blood from a vein in the arm. The procedure takes a few minutes.
Report Delivery
Apply pressure and keep the bandage on for 2–3 hours. Avoid heavy lifting or strenuous exercise with the same arm for a few hours. If bleeding, bruising, or discomfort persists, contact the laboratory.
Timeline: Sample receipt by Mon/Thu 4 pm: report next day. Courier/online delivery may take additional hours.
Patient Instructions
About This Test
Who Should Get This Test
This assay is used to assess the capacity of antibodies in patient serum to inhibit the SARS-CoV-2 virus; to assess the efficacy of anti-SARS-CoV-2 vaccines; and for the screening of convalescent plasma for prophylactic and therapeutic use. It is not intended for the diagnosis of active COVID-19.
How to Prepare
- Sample type: Serum from SST
- Volume: 3 mL; minimum 1 mL
- Transport conditions: Refrigerated or frozen
- Mandatory accompanying document: Duly filled Covid-19 Antibody Test Form (Form 45)
Doctor's Notes
Reviewed by Dr SULOCHANA HEMCHANDRA HOLLA — MBBS, MD (Medical Genetics) · Reg. No. 8532
"Neutralizing antibody tests provide useful serological information, but clinical correlation with symptomatic infection, exposure history and vaccination records is essential. The result should not be used as the sole measure of protection."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolysed, lipemic, or microbially contaminated sample
- Sample not accompanied by Form 45
- Improperly labelled sample
- Transport delay causing inappropriate storage
Understanding Your Results
Negative
No neutralizing antibodies detected. It may indicate no prior infection/vaccination response, waning antibodies, or sample collected too early after exposure.
Equivocal
Borderline result. Repeat testing in 10–14 days with a fresh sample is recommended.
Positive
Neutralizing antibodies detected. Suggests past infection or vaccine-induced humoral immune response. This does not guarantee individual protection from reinfection.
If your test is positive, negative, or equivocal, discuss the result with a physician who can correlate it with your vaccination history, symptoms, and potential exposure. Do not alter your COVID-19 precautions based on a single antibody result.
Limitations
- ⚠Not for diagnosis of active infection
- ⚠Does not quantify absolute protection or duration of immunity
- ⚠May be negative in early infection and wane over time
- ⚠Different assays may yield different cut-offs or results
- ⚠T-cell-mediated immunity is not measured by this test
Risks & Considerations
- ●Mild pain or bruising at injection site
- ●Dizziness/Fainting (rare)
- ●Infection at puncture site (very rare)
- ●Excessive bleeding (rare)
Interfering Factors
- ●Hemolysis, lipemia, or microbial contamination
- ●Incorrect sample storage or prolonged transport
- ●Recent blood transfusion or plasma exchange
- ●Immunosuppressive medications or immunodeficiencies
- ●Collection too soon after infection (<14 days)
Compare With Similar Tests
| Test | SARS-CoV-2 Neutralizing Antibody Test | ||||
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| Comparison | SARS-CoV-2 Neutralizing Antibody Test |
Frequently Asked Questions
What is the cost of the SARS-CoV-2 neutralizing antibody test?
Is fasting required for this test?
What sample is used for this test?
How is neutralizing antibody test different from RT-PCR?
Can this test diagnose COVID-19?
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Is home sample collection available?
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Reference Laboratory Services
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.
Your Data Privacy
Your medical data is protected under Indian law.
✓ 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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