Dengue NS1 Ag

Fasting Required: No

Risk assessment

      Positive Test Risk Factors:

•  

  • Early phase of dengue infection (usually day 1–7 of symptoms).

  • Higher viremia levels, increasing the risk of severe complications.

  • Potential for progression to severe dengue, especially with warning signs (e.g., bleeding, persistent vomiting, or severe abdominal pain).

      Complications to Monitor:

•  

  • Dengue Hemorrhagic Fever: Increased vascular permeability, thrombocytopenia, and bleeding.

  • Dengue Shock Syndrome: Critical drop in blood pressure leading to organ failure.

Normal Range:

• Negative: NS1 antigen not detected.

Test result interpretation

     NS1 Antigen Positive:

• Indicates an active dengue infection in its early phase.

• Confirms the presence of dengue virus.

• Requires further clinical evaluation and monitoring for potential complications like dengue hemorrhagic fever or dengue shock syndrome.

     NS1 Antigen Negative:

• Absence of dengue infection.

• Testing performed outside the diagnostic window (e.g., later in the illness when antibodies dominate).

• Low levels of antigen undetectable by the test.

Blood Sample (Serum or Plasma):

• Collected via venipuncture.

• Serum/plasma is analyzed for NS1 antigen presence.