Immunoglobulin A (IgA) is a blood protein that's part of your immune system. Your body makes IgA to help fight off sickness. Having an IgA deficiency means that you have low levels or no immunoglobulin A in your bloodstream.

Anti-IgA antibodies, sometimes present in individuals with low or absent IgA, can result in serious anaphylactic reactions when transfused with blood products that incidentally contain IgA.

An IgA test provides a snapshot of your immune system’s humoral response. An abnormal IgA level, whether high or low, is not a definitive diagnosis but an indicator that prompts further investigation.

The IGA weekly flyer is super easy to navigate, with sales organized by category so you can quickly see if the items you need are on sale. Before you shop, be sure to check next week’s IGA ad to avoid overspending.

Immunoglobulin A defends against invaders and reduces the risk of allergies & autoimmunity. Learn about the IgA blood test & normal levels here.

Immunoglobulin A (IgA) is the first line of defence in the resistance against infection, via inhibiting bacterial and viral adhesion to epithelial cells and by neutralisation of bacterial toxins and virus, both extra- and intracellularly.

IgA deficiency happens when your immune system doesn’t produce enough (or any) immunoglobulin A. It makes you more likely to get sick from common infections.

The Independent Grocers Alliance (IGA) was founded in 1926 to bring family owned, local grocery stores together under the IGA brand.