Anti-tTG IgG
Anti-tissue transglutaminase IgG (anti-tTG IgG) is used to screen for celiac disease, particularly in patients with IgA deficiency where the IgA-based test would be falsely negative.
Category: Inflammation & Immune
Also known as: anti-ttg igg, anti ttg igg, tissue transglutaminase igg, anti-tissue transglutaminase igg, ttg igg, ttg-igg, antitela prema tkivnoj transglutaminazi igg
Reference range: 0–6 U/mL (Source: ABIM)
Standard unit: U/mL
High values may indicate
High anti-tTG IgG levels may indicate celiac disease, especially when IgA levels are low. Confirmatory testing is recommended.
Low values may indicate
Low or negative anti-tTG IgG levels are normal.
Frequently asked questions
- What is a normal Anti-tTG IgG level?
- A typical reference range for Anti-tTG IgG is 0–6 U/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Anti-tTG IgG measured in?
- Anti-tTG IgG is most commonly reported in U/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Anti-tTG IgG reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Anti-tTG IgG over time?
- Yes. Upload results from any lab and BloodId charts your Anti-tTG IgG over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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