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Also reported in: g/L
Your IgG level is within the normal range, providing adequate antibody-mediated immune protection against bacterial and viral infections.
A critically low IgG level indicates significant antibody deficiency. This can be due to primary immunodeficiency (e.g., common variable immunodeficiency, X-linked agammaglobulinemia) or secondary causes (chronic lymphocytic leukemia, multiple myeloma, immunosuppressive therapy). You are at high risk of recurrent infections.
Seek urgent immunology evaluation. IVIG (intravenous immunoglobulin) replacement therapy may be needed. Antibiotic prophylaxis should be considered.
IgG: {{value}} {{unit}} — critically low (ref: {{low}}–{{high}})Low IgG (hypogammaglobulinemia) reduces your ability to fight bacterial infections. Causes include primary immunodeficiencies, protein-losing conditions (nephrotic syndrome, protein-losing enteropathy), certain medications, and hematologic malignancies.
See your doctor. Quantitative immunoglobulins (IgA, IgM, IgE) and vaccine response testing should be done. Immunology consultation may be needed.
IgG: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})A borderline low IgG level may represent mild antibody deficiency or simply a lower-normal variant. Some people naturally run lower IgG without increased infection risk.
Discuss with your doctor. If you have frequent or unusual infections, further immune evaluation may be warranted.
IgG: {{value}} {{unit}} — borderline lowYour IgG level is within the normal range, providing adequate antibody-mediated immune protection against bacterial and viral infections.
No action needed.
IgG: {{value}} {{unit}} — within reference rangeYour IgG sits in the healthy midrange, reflecting strong humoral immunity and good antibody production capacity.
No action needed.
IgG: {{value}} {{unit}} — optimalA borderline high IgG often reflects chronic immune stimulation — from autoimmune disease, chronic infection, or chronic liver disease (cirrhosis). It can also be seen in polyclonal gammopathies.
Discuss with your doctor. If other immunoglobulins are also elevated and there are clinical symptoms, further investigation may be appropriate.
IgG: {{value}} {{unit}} — borderline highElevated IgG can be polyclonal (from chronic infections, autoimmune diseases like SLE or rheumatoid arthritis, or chronic liver disease) or monoclonal (from a plasma cell disorder like MGUS or multiple myeloma).
See your doctor. Serum protein electrophoresis and immunofixation can differentiate polyclonal from monoclonal increases.
IgG: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})A critically elevated IgG level is most commonly due to a monoclonal gammopathy — a plasma cell disorder such as multiple myeloma, MGUS, or Waldenström's macroglobulinemia. The excess IgG can cause blood hyperviscosity.
Seek prompt hematology evaluation. SPEP, immunofixation, serum free light chains, and a full workup for plasma cell disorders are needed.
IgG: {{value}} {{unit}} — critically high (ref: {{low}}–{{high}})Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.