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FAQs
What is the purpose of this test?
The test is a lateral flow immunoassay designed for the simultaneous detection and differentiation of anti-dengue virus IgG, IgM, and the dengue NS1 antigen (serotypes 1, 2, 3, and 4). It helps healthcare professionals diagnose dengue virus infections.
What types of specimens can be used?
What should I do if the Control (C) line does not appear?
What is the difference between a positive IgM and a positive IgG result?
How long does it take to get a result?
If the C line does not develop, the test is invalid regardless of any color on the test lines. The specimen must be retested using a new device. Note that an invalid result in one panel (e.g., the IgG/IgM side) does not necessarily invalidate the result in the other panel (the Ag side).
Results must be read between 20 and 25 minutes after the specimen is applied. While positive results may appear as early as 1 minute, negative results must be confirmed at the full 25-minute mark. Interpretations made after 25 minutes are considered invalid.
The test is compatible with human serum, plasma, or whole blood. Specific collection requirements apply, such as using anticoagulants (EDTA, citrate, or heparin) for plasma and whole blood, or no anticoagulants for serum.
• IgM Positive: Suggests a primary (new) infection. IgM usually appears three days after exposure.
• IgG Positive: Suggests a secondary or past infection. IgG typically rises around seven days and can persist for life.
• Both Positive: Suggests a late primary or early secondary infection.
What does it mean if the Ag (NS1) line is positive?
A positive Dengue Ag (T line) result suggests an active infection. This antigen can often be detected from the first day of fever onset up to day nine.
How should the test kits be stored?
Unopened test devices should be stored between 2-30°C. They must not be frozen or exposed to temperatures above 30°C. If refrigerated, the device must be brought to room temperature before opening the pouch.
Are there any substances that interfere with the test results?
Common substances like albumin, bilirubin, creatinine, glucose, and heparin were tested and found not to affect performance at the concentrations studied. However, specimens with gross lipemia, hemolysis, or turbidity should be avoided to ensure accurate interpretation.
Where can I find the data sheet for this test?
The data sheet is linked here for download
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