Immunoglobulin G (IgG)
Immune blood
What It Is
IgG is the most abundant antibody in the blood, providing long-term immunity against infections.
Why It Matters
IgG levels help assess immune competence and are important in evaluating immunodeficiency.
If Levels Are High
Elevated IgG may indicate chronic infection, autoimmune disease, or liver disease.
If Levels Are Low
Low IgG suggests immunodeficiency and increased susceptibility to infections.
Preparation
No special preparation required.
How Often to Test
As clinically indicated.
Panels Including This Marker
Important Disclaimer
This information is for educational purposes only and does not constitute medical advice or diagnosis. Results should be interpreted in clinical context by a qualified healthcare professional. If you have severe symptoms or urgent concerns, seek urgent medical help.