Medically reviewed by Dr. Prapti Bhatt on 16 Oct 2026
A blood test that detects the antigen (proteins of the organism itself) of dengue virus using the ELISA/EIA method.
Helps diagnose dengue fever, a mosquito-borne viral illness causing high fever, body ache and low platelets. A positive antigen test usually indicates a current infection.
Fever lasting more than 2–3 days, chills, body ache, rash, headache or vomiting — especially in monsoon season.
No fasting needed.
The normal (expected) reference value for the Dengue NS1 Antigen ELISA test is Negative (Non-Reactive). In semi-quantitative or index-based ELISA assays, results are reported relative to a cut-off value: an Immune Status Ratio (ISR) or Panbio/Optical Density Index of less than 0.90 is interpreted as Negative (no detectable NS1 antigen), an index between 0.90 and 1.10 is considered Equivocal or Borderline, and an index greater than 1.10 is interpreted as Positive (Reactive, indicating acute dengue infection). Reference index cut-offs may vary marginally depending on the specific manufacturer's ELISA assay kit.
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No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Usually a blood sample; for some infections a swab, CSF, urine or other sample is used — as advised by your doctor.
Usually within 12–36 hours after the sample reaches the lab. You will receive the report online.
