Immunoglobulin G (IgG)

Analyte [material]

Immunoglobulin G (IgG) [S]

Reference range, target level, or decision threshold

7-16 g/L!

Interpretation of results

Polyclonal: chronic inflammation, parasitic diseases, cirrhosis, AIDS, autoimmune diseases, sarcoidosis, malignancies; monoclonal: multiple myeloma, other monoclonal gammopathies (including monoclonal gammopathy of undetermined significance [MGUS], primary amyloidosis), lymphomas

Primary: X-linked agammaglobulinemia (Bruton syndrome), common variable immunodeficiency, hyper IgM syndrome, IgA deficiency, IgG subclass deficiency, severe combined immunodeficiency, ataxia-telangiectasia; secondary: lymphoid neoplasms (myeloma, chronic lymphocytic leukemia), histiocytosis, malnutrition, protein-losing enteropathies, nephrotic syndrome, burns, chemotherapy and radiotherapy, glucocorticoid therapy, posttransplant immunosuppression, splenectomy, pernicious anemia, thymoma, viral infections (Epstein-Barr virus [EBV] infection, rubella, measles)

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