IgG is a type of antibody, a protein produced by the body's immune system that helps fight off infection. The level of IgG in the blood is an indicator of how well the immune system is functioning. A high IgG level can indicate an increased risk of infection or a recent infection.
What Causes a High IgG Level?
A high IgG level can be caused by a variety of factors, including a recent infection, an autoimmune disorder, or certain medications. A high IgG level can also be caused by a large number of antibodies produced in response to an infection, such as a virus or bacteria.
What Are the Symptoms of a High IgG Level?
In most cases, a high IgG level does not cause any symptoms. However, if the high level is caused by an infection, symptoms may include fever, fatigue, and swollen lymph nodes.
How Is a High IgG Level Diagnosed?
A high IgG level is usually diagnosed with a blood test. The doctor will look at the results of the test to determine the cause of the high IgG level.
How Is a High IgG Level Treated?
Treatment for a high IgG level will depend on the underlying cause. If the high level is caused by an infection, the doctor may prescribe antibiotics to treat it. In some cases, a doctor may suggest lifestyle changes, such as quitting smoking or exercising more, to help reduce the IgG level.