Immunoglobulin A (IgA) in Serum (Mass Concentration)

What Does This Test Measure?

IgA is one of the key proteins in your immune system. It helps defend against harmful bacteria and viruses that enter your body through mucous membranes, like those in your nose, throat, and digestive tract. This test helps doctors assess your immune response and identify potential problems with how your body produces antibodies.

Why Might You Need This Test?

Your doctor may order this test if you have symptoms like frequent infections, digestive issues, or if they suspect an immune disorder. It can also be part of a broader evaluation for conditions like celiac disease, lupus, or other autoimmune diseases.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw a blood sample. The process usually takes a few minutes, and you can resume normal activities afterward.

What Are Possible Results?

Results are typically reported as a mass concentration of IgA in the blood. While reference ranges can vary by lab, they generally fall within a specific range for healthy individuals. Your doctor will interpret the results in the context of your overall health and symptoms.