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. If the IgG is positive but the IgM is low or negative, then it is likely that the person had an infection sometime in the past.
Also question is, what does it mean if your IgG is high?
In rare cases, a high level may mean IgE multiple myeloma. IgG 4 Major type of antibody found in the blood that can enter tissues and fight infection. Levels of IgG are higher in IgG MGUS, IgG multiple myeloma, long-term hepatitis, and multiple sclerosis (MS).
Is IgG indicative of current or past infection?
While IgM is an indicator of a current infection, an IgG indicates a recent or past exposure to the illness. IgM is the first antibody that the body produces in an acute infection. It is approximately six times larger than IgG and is multivalent. This means that it has multiple binding sites.
What is the function of IgG in the body?
Function. Antibodies are major components of humoral immunity. IgG is the main type of antibody found in blood and extracellular fluid allowing it to control infection of body tissues. By binding many kinds of pathogens such as viruses, bacteria, and fungi, IgG protects the body from infection.