Table of Contents
What is dengue IgG and IgM positive?
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 dengue IgG IgM and NS1?
The dengue antigen NS1, IgG & IgM test measures the dengue virus or antibodies which are produced in response to dengue infection. Dengue fever is a viral infection which is transmitted to humans by mosquitoes which live in tropical and subtropical climates and are responsible for carrying the virus.
What does NS1 positive mean?
A positive NS1 test result confirms dengue virus infection without providing serotype information. 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.
What is sensitivity specificity?
Sensitivity: the ability of a test to correctly identify patients with a disease. Specificity: the ability of a test to correctly identify people without the disease. True positive: the person has the disease and the test is positive.
What if NS1 antigen is positive?
Is it possible to have dengue with a negative IgG and NS1?
For the time being, yes. You haven’t specified NS1 result, so let’s just assume it to be negative as well. In the initial 3–4 days of dengue infection, NS1 is positive. Then it becomes non reactive and IgM is positive. IgM positivity indicates acute infection. Gradually, when infection resolves, even IgM becomes negative and IgG becomes positive.
What is the meaning of NS1 antigen positive?
Ns1 antigen positive usually means u have dengue infection and it is in very early stages.. Ns1 can be poitive in other virus infections also but usually they are uncommon in india .in this scenario it is mostly accompanied to dengue.
What does a positive IgM antibody test mean?
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)
How to confirm a positive IgM antibody test for dengue?
To confirm,IgM antibodies for dengue are tested by the ELISA method after a few days.If IgM is positive,then a recent infection with dengue virus can be confirmed. IgG indicates a past infection with dengue. Therefore,in this case ,it should be correlated with the cl…