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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 GroupReference RangeUnitNotes
Adults (18–64)700 – 1600mg/dL

Also reported in: g/L.

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Related Topics

immunityimmunodeficiencymyeloma

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