Infectious Test

Dengue NS1 Antigen

Dengue NS1 test is a blood test that detects the dengue virus protein (NS1). It is the most accurate test during the first few days of fever and helps diagnose dengue infection early.

Also known as: Dengue NS1 Ag, NS1 antigen test

Normal Range

Parameter	Reference Range
Negative	No infection
Positive	Dengue infection likely

Who Should Take This Test?

Recommended if you have high fever, severe headache, pain behind eyes, joint/muscle pain, rash, or live in/traveled to a dengue-endemic area during monsoon season.

How It Works

A blood sample is taken and tested for NS1 antigen, which is produced by the dengue virus early in infection.

Preparation

No special preparation is needed.

How Often?

When symptoms occur, especially during monsoon season

Symptoms to Watch

High fever (104°F/40°C)

Severe headache

Pain behind the eyes

Joint and muscle pain

Nausea and vomiting

Rash

Mild bleeding (nose or gums)

Risk Factors

Living in or traveling to tropical areas

Previous dengue infection

Monsoon season exposure

Standing water near residence

Related Conditions

Dengue FeverDengue Hemorrhagic FeverDengue Shock Syndrome

Cost Comparison in India

Prices range from ₹720 to ₹999

Thyrocare

₹720Book

Dr Lal PathLabs

₹850Book

Metropolis Healthcare

₹999Book

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Medical Disclaimer: The information provided here is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider.