Dengue NS1 Antigen

DENGUE NS1 ANTIGEN Test

The Dengue NS1 Antigen test detects the non-structural protein 1 (NS1) of the dengue virus in a blood sample. NS1 can be detected during the early phase of dengue infection, making this test useful when a person has recently developed symptoms.

The test is commonly recommended for individuals with acute fever and symptoms that may suggest dengue, such as headache, pain behind the eyes, muscle and joint pain, nausea, vomiting, or skin rash.

Testing is most useful during the early days of illness. As the infection progresses, the amount of NS1 antigen may decrease while dengue antibodies become more detectable. Therefore, depending on the day of illness, a healthcare provider may recommend Dengue IgM/IgG antibody testing or PCR along with NS1. A CBC and platelet count may also be advised to monitor blood-count changes.

DENGUE NS1 ANTIGEN Test is Recommended for Individuals:

• Individuals with recent-onset fever and suspected dengue
• People experiencing severe headache or body aches
• Patients with pain behind the eyes
• Individuals with nausea, vomiting, or skin rash along with fever
• People living in or travelling to areas where dengue is circulating
• Patients requiring early evaluation for acute dengue infection
• Individuals advised by a healthcare provider to undergo dengue testing based on symptoms and clinical findings.

FAQs

1. What does the Dengue NS1 Antigen test detect?
The test detects NS1 protein produced by the dengue virus in the blood. Its presence can indicate an acute dengue infection.

2. When should the Dengue NS1 test be done?
NS1 testing is most useful during the early stage of dengue illness, particularly during the first several days after symptoms begin. The exact timing can affect test sensitivity.

3. Can a negative NS1 test rule out dengue?
Not always. A negative result does not completely exclude dengue, particularly if testing is performed later in the illness. Depending on the timing and symptoms, your healthcare provider may recommend Dengue IgM/IgG, PCR, or repeat testing.