Immunoglobulin IgA, IgG, IgM
Fasting Required: No

Specimen: Blood

Results: 3-5 Business Days

Description: Test Includes: Immunoglobulin A, Immunoglobulin G, and Immunoglobulin M

Immunoglobulin A (IgA) – IgA comprises about 15% of the total serum immunoglobulins but is also found in saliva, tears, respiratory and gastric secretions, and breast milk. It provides protection against infection in mucosal areas of the body such as the respiratory tract and the gastrointestinal tract. When passed from mother to baby during breast-feeding, it helps protect the infant's gastrointestinal tract. Significant amounts of IgA are not present until after 6 months of age.

Immunoglobulin G (IgG) – About 70-80% of the immunoglobulin in the blood is IgG. IgG antibodies form the basis of long-term protection against microorganisms. Specific IgG antibodies are produced during an initial infection or exposure, rising a few weeks after it begins, then decreasing and stabilizing. In those with a normal immune system, sufficient IgG is produced to prevent re-infection. IgG is the only immunoglobulin that can pass through the placenta. The mother's IgG antibodies provide protection to the fetus during pregnancy and to the baby during its first few months of life.

Immunoglobulin M (IgM) – IgM antibodies are produced as a body's first response to a new infection, providing short-term protection. They increase for several weeks and then decline as IgG production begins.

Includes: IgG, IgA, IgM

Methodology: Immunoturbidimetric

Alternative Name(s): Quantitative Immunoglobulins

Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.