What is the normal range of tTG test?
Reference Interval
| 3 U/mL or less | Negative |
|---|---|
| 4-10 U/mL | Weak Positive |
| 11 U/mL or greater | Positive |
What should my celiac level be?
Celiac Disease Diagnostics Panel
| Age | Reference Range |
|---|---|
| 9-11 years | 33-200 mg/dL |
| 12-16 years | 36-220 mg/dL |
| 17-60 years | 47-310 mg/dL |
| 61 years or older | 70-320 mg/dL |
What does a positive tTG test mean?
The finding of tTG IgG antibodies may indicate a diagnosis of celiac disease, particularly in individuals who are IgA deficient. For individuals with moderately to strongly positive results, a diagnosis of celiac disease is possible and the patient should undergo a biopsy to confirm the diagnosis.
What does tTG test for?
What Is a Tissue Transglutaminase IgA (tTG-IgA) Test? A tissue transglutaminase IgA (tTg-IgA) test is used to help doctors diagnose celiac disease. Celiac disease is an autoimmune disorder in which the immune system mistakenly thinks that gluten — a protein in wheat, barley, rye, and oats — is a foreign invader.
Is High IgA always bad?
Both low and high IgA levels are associated with higher mortality. In 4,255 Vietnam-era war veterans, higher IgA levels were associated with a 2-fold increased risk of dying from both all-causes and infectious diseases [12]. In people aged 90 – 99 years, higher IgA levels were associated with higher mortality [13].
What is considered a low IgA level?
Selective IgA deficiency is an IgA level < 7 mg/dL (< 70 mg/L, < 0.4375 micromol/liter) with normal IgG and IgM levels. It is the most common primary immunodeficiency. Many patients are asymptomatic, but some develop recurrent infections and autoimmune disorders.
