Difference Between IGA and IGG

Immunoglobulin A: IgA antibodies are found in the mucous membranes of the lungs, sinuses, stomach, and intestines. They're also in fluids these membranes produce, like saliva and tears, as well as in the blood. Immunoglobulin G: IgG is the most common type of antibody in your blood and other body fluids.

1. What is IgA vs IgG?
2. What does IgG and IgA test for?
3. What does elevated IgG and IgA mean?
4. What is the difference between IgA and IgE?
5. What is normal IgG range?
6. What is considered a high IgG level?
7. What does a positive IgA test mean?
8. What does IgG blood test show?
9. Is IgA elevated in celiac disease?
10. What does an IgA test show?
11. What does IgA do in the body?
12. What is normal range for IgA?

What is IgA vs IgG?

Immunoglobulin A (IgA): It's found in the linings of the respiratory tract and digestive system, as well as in saliva (spit), tears, and breast milk. Immunoglobulin G (IgG): This is the most common antibody. It's in blood and other body fluids, and protects against bacterial and viral infections.

What does IgG and IgA test for?

Your body makes different types of immunoglobulins to fight different types of these substances. An immunoglobulins test usually measures three specific types of immunoglobulins. They are called igG, igM, and IgA. If your levels of igG, igM, or IgA are too low or too high, it may be a sign of a serious health problem.

What does elevated IgG and IgA mean?

High values

Levels of IgA also get higher in some autoimmune diseases, such as rheumatoid arthritis and systemic lupus erythematosus (SLE), and in liver diseases, such as cirrhosis and long-term (chronic) hepatitis. IgG. High levels of IgG may mean a long-term (chronic) infection, such as HIV, is present.

What is the difference between IgA and IgE?

IgA is the prototype of a secretory immunoglobulin and usually is present in external fluids in proportions greater than in serum. Previous studies have suggested that IgE also is a secretory immunoglobulin.

What is normal IgG range?

Normal Ranges Adult: IgG 6.0 - 16.0g/L. IgA 0.8 - 3.0g/L. IgM 0.4 - 2.5g/L.

What is considered a high IgG level?

High IgG (>16g/L)

Elevated IgG levels can be seen in chronic active infection or inflammation, or in association with plasma cell disorders.

What does a positive IgA test mean?

The finding of tissue transglutaminase (tTG) IgA antibodies is specific for celiac disease and possibly for dermatitis herpetiformis. For individuals with moderately to strongly positive results, a diagnosis of celiac disease is likely and the patient should undergo biopsy to confirm the diagnosis.

What does IgG blood test show?

This test checks the amount of certain antibodies called immunoglobulins in your body. Antibodies are proteins that your immune cells make to fight off bacteria, viruses, and other harmful invaders. The immunoglobulin test can show whether there's a problem with your immune system.

Is IgA elevated in celiac disease?

However, 3 percent of patients with celiac disease have IgA deficiency. Therefore, if the serum IgA tTG result is negative but clinical suspicion for the disease is high, a serum total IgA level may be considered.

What does an IgA test show?

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 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.

What is normal range for IgA?

The IgA normal range differs with age and the IgA normal range for an healthy adult is between 80 – 350 mg/dL.