The Dengue NS1 Antigen Test detects the presence of the Non-Structural Protein 1 (NS1) antigen in the blood, which is produced by the dengue virus during the early stages of infection. This test is used to diagnose dengue fever in its initial phase, typically within the first 1–7 days of symptom onset.
Purpose of the Test:
•Early diagnosis of dengue fever: Confirms the presence of dengue virus in suspected cases.
•Monitor outbreaks: Helps identify and control dengue outbreaks in affected regions.
•Initiate timely treatment: Enables prompt medical intervention to prevent complications like dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS).
When to Perform the Test:
•Within the first week of fever onset when NS1 antigens are most detectable in the bloodstream.
Key Notes:
•The test is specific to dengue virus and does not detect other viral infections.
•Often performed alongside IgM and IgG antibody tests to confirm or monitor later stages of the disease.
•A positive result confirms dengue infection, while a negative result does not completely rule it out (other tests like PCR or antibodies may be required).
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