Your immune system is your body’s defense in opposition to infections and other harmful invaders. Without it, you would repeatedly get sick from bacteria or viruses. Your immune system is made up of special cells, tissues, and organs that work simultaneously to protect you. A person with a weak immune system is more prone to frequent infections. White blood cells, antibodies, and other elements, including organs and lymph nodes, constitute the body’s immune system. There are various kinds of tests that are performed to detect the disease. These tests are performed to detect immunoglobulins or antibodies in your body.
An immunoglobulin test measures the level of kinds of antibodies in the blood. The immune system makes antibodies to defend the body from bacteria, viruses, and allergens.
The body makes various antibodies, or immunoglobulins, to fight against different things.
Doctors may perform an immunoglobulin test to see if a person has an infection or is safe from getting an infection (is immune to it). Doctors also use immunoglobulin tests in diagnosing immunodeficiencies (when the immune system isn't working properly). Doctors may detect immunodeficiency in a child who gets a lot of infections or uncommon infections.
The tests might be done in assessing allergies or autoimmune conditions like juvenile idiopathic arthritis, lupus, and celiac disease.