Dengue NS1 Antigen Test

This test detects the NS1 antigen, a viral protein secreted by dengue virus-infected cells during the acute phase of infection. NS1 can be detected in the blood from the first day of fever onset up to approximately nine days. The test provides a qualitative result indicating whether the NS1 antigen is present.

The NS1 test enables early diagnosis of dengue infection, even before the immune system has produced detectable antibodies. Early detection allows for timely clinical management and monitoring for complications. This is especially important in dengue-endemic regions where prompt diagnosis can guide appropriate care. Results should be interpreted by a healthcare professional.

Testing is most valuable during the first one to five days of fever onset in individuals who have recently visited dengue-endemic areas. The NS1 antigen may become undetectable after approximately nine days. Consult a healthcare professional for guidance on testing timing.