What is IgA test results?
An IgA test measures the blood level of immunoglobulin A, one of the most common antibodies in the body.
Antibodies are proteins made by the immune system to fight bacteria, viruses, and toxins..
What is normal IgG?
Normal Ranges Adult: IgG 6.0 – 16.0g/L. IgA 0.8 – 3.0g/L. IgM 0.4 – 2.5g/L.
What does a positive IgA test mean?
The First Step: Tissue Transglutaminase Antibodies (tTG-IgA) – the tTG-IgA test will be positive in about 98% of patients with celiac disease who are on a gluten-containing diet. The test’s sensitivity measures how correctly it identifies those with the disease.
What does IgA do in the body?
Immunoglobulin A (IgA) is an antibody blood protein that’s part of your immune system. Your body makes IgA and other type of antibodies to help fight off sickness. Having an IgA deficiency means that you have low levels of or no IgA in your blood.
What is a high IgA level?
High levels of IgA may mean that monoclonal gammopathy of unknown significance (MGUS) or multiple myeloma is present.
What is considered low IgA?
Selective IgA deficiency is an IgA level < 7 mg/dL (< 70 mg/L) with normal IgG and IgM levels. It is the most common primary immunodeficiency. Many patients are asymptomatic, but some develop recurrent infections and autoimmune disorders.