What is normal range for tTG IgA?

Reference Interval

3 U/mL or less Negative
4-10 U/mL Weak Positive
11 U/mL or greater Positive

What should your tTG level be?

Turnaround Times

Range (U/ml) Interpretation
7 – 10 Equivocal
11 – 50 Weak positive
51 – 100 Moderate positive
>100 Strong positive

What is a positive tTG IgA result?

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 is a positive tissue transglutaminase test?

Tissue Transglutaminase Antibodies (tTG-IgA) – the tTG-IgA test will be positive in about 98% of patients with celiac disease who are on a gluten-containing diet. The test’s sensitivity measures how correctly it identifies those with the disease.

What is considered a high IgA level?

Takeaway. High IgA usually points to chronic infections or inflammation, though diverse disorders can raise its levels. In adults, values above 300 mg/dL are considered high by most labs. High levels do not cause any symptoms.

What does tissue transglutaminase IgA test for?

A tissue transglutaminase IgA (tTg-IgA) test is used to help doctors diagnose celiac disease. In this autoimmune disorder, the immune system mistakenly thinks that gluten — a protein in wheat, barley, rye, and oats — is a foreign invader.

How long does tissue transglutaminase take?

You should get the results back in about 1-2 weeks. Your child’s doctor will go over the results with you.

What causes a high IgA level?

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 tTG IgA test?

The tTG IgA test, also known as a tTG-IgA blood test and a tissue transglutaminase IgA antibody lab test, measures the tTG IgA antibody blood levels. Tissue transglutaminase, or tTG, IgA antibodies are proteins produced by the immune system.

What is an IgA antibody test?

The Immunoglobulin A (IgA) test measures levels of IgA antibodies in a person’s blood. Antibodies are produced by the immune system in response to various bacteria, viruses and diseases in the body.

What is IgA antibody?

IgA antibody is the most abundant antibody class in human serum and has a unique role in mediating immunity. IgA is a polyvalent antibody that is translocated to mucosal surfaces as the first line of defense against infections. Most of the secreted IgA lines the mucosal surfaces including respiratory,…

What is human tissue transglutaminase?

Tissue transglutaminase is an enzyme that fixes damage in your body . People with celiac disease often make antibodies that attack this enzyme. These are called anti-tissue transglutaminase antibodies.