A dengue fever test checks your blood for signs of a dengue fever infection. There are two main types of dengue fever blood tests. One looks for the virus itself; the other checks for antibodies to the virus. Antibodies are proteins made by your immune system to fight foreign substances like viruses.
The presence of IgG-class antibodies to dengue virus (DV) is consistent with exposure to this virus sometime in the past. By 3 weeks following exposure, nearly all immunocompetent individuals should have developed IgG antibodies to DV. The presence of IgM-class antibodies to DV is consistent with acute-phase infection.
Mild symptoms of dengue can be confused with other illnesses that cause fever, aches and pains, or a rash.
The most common symptom of dengue is fever with any of the following:
- Nausea, vomiting.
- Rash.
- Aches and pains (eye pain, typically behind the eyes, muscle, joint, or bone pain)
- Any warning sign.
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