Reviewed: 13. Juli 2026
IgA Immunoglobulin A (IgA)
Unit: g/l
Quick Explanation
IgA mainly protects the mucous membranes of the respiratory tract and gut from pathogens. IgA deficiency is the most common congenital immune deficiency and often causes no symptoms; elevated values occur with chronic mucosal inflammation or liver disease.
📊 Reference Values
ℹ️ Reference ranges may vary slightly between laboratories. Always compare your value with the reference range from your own lab report.
🔍 Possible Causes
Value too high — possible causes
- ·Chronic mucosal inflammation
- ·Liver disease
- ·Autoimmune diseases
Value too low — possible causes
- ·Congenital IgA deficiency (often without symptoms)
- ·Certain bowel diseases
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Is my IgA deficiency clinically significant?
- →Does this need to be considered for future blood transfusions?
Have a complete lab report?
Medyra explains your entire lab report in plain language and prepares questions for your doctor appointment — free, in your language, in under 60 seconds.
Start for free →🔗 Related Lab Values
Medical Disclaimer
The content on this page is for general information only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist for health-related questions. Lab values should always be assessed in the context of your personal medical history.