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immunology
Immunoglobulin G
IgG
Clinical Overview
IgG is the most abundant immunoglobulin, providing long-term immunity. Low IgG indicates immune deficiency; high IgG may suggest chronic infection, autoimmune disease, or multiple myeloma.
Reference RangesWHO/IFCC standards
| Age Group | Reference Range | Unit | Notes |
|---|---|---|---|
| Adults (18–64) | 700 – 1600 | mg/dL | — |
Also reported in: g/L.
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Related Topics
immunityimmunodeficiencymyeloma