What is dengue IgG positive means?

What is dengue IgG positive means?

Positive IgM and IgG tests for dengue antibodies detected in an initial blood sample mean that it is likely that the person became infected with dengue virus within recent weeks. IgM antibody tests can be positive if a person has been infected with a similar virus, such as chikungunya (called cross-reaction).

When does dengue IgG become positive?

Anti-dengue virus IgG starts rising during 5–7 days after primary infection and even earlier in secondary infections (9, 11, 12) and the highest IgG titers appear during the 3rd week of a primary infection.

What is the difference between dengue IgG and IgM?

The IgM become detectable on Day 3 to 5 of illness in case of primary dengue infection and persist for 2 to 3 months, whereas IgG appear by the fourteenth day and persist for life. Secondary infection shows that IgG rises within 1 to 2 days after onset of symptoms, simultaneously with IgM antibodies.

How do you read dengue test results?

Interpretation of results

1. A positive NS1 test result confirms dengue virus infection without providing serotype information.
2. A negative NS1 test result does not rule out infection. People with negative NS1 results should be tested for the presence of dengue IgM antibodies to determine possible recent dengue exposure.

How is dengue IgG treated?

There is no specific medicine to treat dengue infection. If you think you may have dengue fever, you should use pain relievers with acetaminophen and avoid medicines with aspirin, which could worsen bleeding. You should also rest, drink plenty of fluids, and see your doctor.

What does IgG mean in medical terms?

Immunoglobulin G (IgG): This is the most common antibody. It’s in blood and other body fluids, and protects against bacterial and viral infections.

What if IgG is positive and IgM is negative?

IgM positive, IgG negative: This suggests infection in the early stages of the disease. The patient is infectious. If the result does not coincide with the clinical picture (for example, if there are no symptoms) it could be a false positive.

What does it mean if IgG is positive and IgM is negative?

What is dengue IgG negative?

Negative. Negative. Too soon after initial exposure for antibodies to develop or symptoms due to another cause. Positive IgM and IgG tests for Dengue antibodies detected in a sample means that the patient became infected with dengue virus within recent weeks.

What is the normal range of dengue fever?

Reference Range: Dengue Fever Virus Antibody, IgG 1.64 IV or less: Negative – No significant level of detectable dengue fever virus IgG antibody. 1.65-2.84 IV: Equivocal – Questionable presence of antibodies. Repeat testing in 10-14 days may be helpful.

How long do dengue antibodies last?

Serological methods. Serological methods, such as enzyme-linked immunosorbent assays (ELISA), may confirm the presence of a recent or past infection, with the detection of anti-dengue antibodies. IgM antibodies are detectable ~1 week after infection and remain detectable for about 3 months.

What is the first stage of dengue?

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)