Dengue Virus - NS1 Antigen Quantitative by ELISA method
Also Known As
Test Parameters Included
- Dengue Virus NS1 Antigen Concentration (ng/mL or IU/mL) by quantitative ELISA
- Pathologist Virology Remark - correlated with clinical presentation and disease phase
Department
Methodology
Sample Required
Preparation
Schedule Report
24 Hours
Emergency Report
Yes
Frequently Asked Questions
When is NS1 antigen most useful in dengue?
NS1 is detectable during early acute infection, typically from day 1-7 of fever, before IgM antibodies appear, making it ideal for early diagnosis.
What sample is used for NS1 testing?
Serum (1 mL) or plasma is preferred. Collect during febrile phase for optimal antigen detection.
Does a positive NS1 confirm dengue?
Yes, positive NS1 indicates active dengue virus infection. Quantitative levels may correlate with viral load and disease severity.
Can NS1 be negative if dengue is present?
Yes, if tested too late (after day 7) when antigen clears, or if viral load is low. Repeat with IgM/IgG serology if clinically suspected.
Is fasting required for NS1 test?
No fasting required. Sample can be collected anytime during febrile illness.
How soon are results available?
Reports typically within 24 hours. Urgent results may be available sooner; contact lab for STAT processing.
Test Description
Test Code
D12
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