Immunoglobulin G

The Immunoglobulin G (IgG) blood test measures the level of IgG antibodies in the blood. IgG is the most abundant type of immunoglobulin in the body and plays a crucial role in providing long-term immunity against various pathogens.

Sample Type: The test requires a small blood sample, typically obtained by drawing blood from a vein in your arm using a needle.

Normal Range: The normal range for IgG levels can vary depending on the specific laboratory and the reference values they use. Generally, the normal range is around 700 to 1,500 milligrams per deciliter (mg/dL).

The IgG blood test is primarily used to assess the overall level of IgG in the body. Abnormalities in IgG levels can be indicative of various conditions, including immune disorders, infections, and autoimmune diseases.

Low levels of IgG may be seen in conditions such as primary immunodeficiencies, certain types of infections, or when there is a decreased production of IgG. High levels of IgG can be associated with chronic infections, autoimmune diseases, or monoclonal gammopathies.

It’s important to note that the interpretation of the IgG test results should be done in the context of the individual’s specific medical condition and in conjunction with other clinical findings. Additional tests and evaluation may be necessary to determine the underlying cause of abnormal IgG levels.

If you have concerns about your IgG levels or suspect an immune-related condition, it’s recommended to consult with a healthcare professional for proper interpretation of your test results and to discuss any necessary steps or treatments based on the findings. They will be able to provide you with the most accurate information and guide you accordingly.