Dengue Test Report: How to Read NS1, IgM & IgG
A dengue report shows whether the dengue virus protein (NS1) or antibodies (IgM, IgG) were found in your blood. Doctors also watch your platelet count.
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What a dengue test checks
NS1 antigen
A virus protein found in the first days of fever.
IgM and IgG
Antibodies your body makes, early (IgM) and later (IgG).
Platelets
Often repeated to watch the trend from day to day.
Dengue result values
Labs differ a little. Always compare with the range printed on your report.
| Test | Usual result | Unit | What it tells you |
|---|---|---|---|
| Dengue tests | |||
| NS1 antigen | Negative | Positive suggests a current infection. | |
| Dengue IgM | Negative | Positive points to a recent infection. | |
| Dengue IgG | Negative | Positive can mean a past or repeat infection. | |
| Blood counts | |||
| Platelet count | 1.5–4.5 lakh | per µL | Can fall in dengue, so it is checked often. |
| Total WBC | 4,000–11,000 | cells/µL | Often a little low in the first days. |
Ranges from the NirogGyan biomarker library. Updated .
What a dengue report looks like
The same results in the usual lab layout, and as a NirogGyan Smart Report.
Numbers and ranges in rows
Each value on our report slider
How to read your dengue report
Check your details
Note the test date. Results are read with the day of your fever.
Find each result
NS1, IgM and IgG are reported as positive or negative.
Compare with the usual result
Negative is the usual result for each dengue test.
Look for flags
A star or flag marks a result outside the usual. Your doctor reads it with your symptoms.
Dengue report questions
What does NS1 positive mean?
NS1 is a dengue protein found in the blood in the first days of fever. A positive NS1 result suggests a current dengue infection, and your doctor confirms it with your symptoms.
What do IgM and IgG mean in a dengue report?
IgM usually rises about 4 to 5 days after fever starts and points to a recent infection. IgG rises later and can stay for years after a past infection.
Can a dengue test be negative in the first days?
Yes. IgM and IgG can still be negative early in the illness. That is why NS1 is often tested in the first 5 days of fever.
Why does the doctor check platelets in dengue?
Dengue can lower the platelet count, so doctors repeat the CBC to watch the trend from day to day.
What is a normal platelet count?
Our biomarker library uses 150,000 to 450,000 per µL. Your lab's range may differ a little.
More report guides
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Upload your reportThis page explains how to read a lab report. It does not replace advice from your doctor. All sample values are made up.