An immunoglobulins blood test measures the amount of immunoglobulins in your blood. Immunoglobulins are also called antibodies. Antibodies are proteins that your immune system makes to fight germs, such as viruses and bacteria. Your body makes different kinds of antibodies to fight germs in different parts of the body and at different stages of an infection.
An immunoglobulins blood test can help your health care provider diagnose different types of health conditions that may affect your immune system.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
- ≤ 1 y
- 246–904 mg/dL
- ≤ 10 y
- 462–1682 mg/dL
- ≤ 13 y
- 503–1719 mg/dL
- ≤ 16 y
- 509–1580 mg/dL
- ≤ 18 y
- 487–1327 mg/dL
- ≤ 2 y
- 242–1170 mg/dL (varies by lab) ARUP 242–1108 · Mayo 313–1170 mg/dL
- ≤ 4 mo
- 100–334 mg/dL
- ≤ 4 y
- 295–1156 mg/dL
- ≤ 5 mo
- 100–334 mg/dL
- ≤ 7 y
- 386–1470 mg/dL
- ≤ 9 mo
- 164–588 mg/dL
- 1 y – 2 y
- 313–1170 mg/dL
- 10 y – 12 y
- 503–1719 mg/dL
- 10 y – 14 y
- 581–1652 mg/dL
- 13 y – 15 y
- 509–1580 mg/dL
- 15 y – 18 y
- 479–1433 mg/dL
- 16 y – 17 y
- 487–1327 mg/dL
- 18 y+
- 767–1590 mg/dL
- 19 y+
- 768–1632 mg/dL
- 2 y – 3 y
- 295–1156 mg/dL
- 3 y – 4 y
- 485–1160 mg/dL
- 4 y – 6 y
- 386–1470 mg/dL
- 5 mo – 8 mo
- 164–588 mg/dL
- 5 y – 9 y
- 514–1672 mg/dL
- 7 y – 9 y
- 462–1682 mg/dL
- 9 mo – 1 y
- 246–904 mg/dL
- Normal
- 800–1500 mg/dL
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges), Mayo Clinic Laboratories (Pediatric Test Catalog), Mayo Clinic Laboratories (Test Catalog).
All 73 source ranges
What an abnormal result can be associated with
- A high result
- Increased circulating IgG concentration
- A low result
- Decreased circulating IgG concentration
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Collection
- Serum gel tube · 1 mL · Mayo Clinic Laboratories (Test Catalog)
- Part of
- Immunoglobulin panel
- Listed under
- Autoimmune Diseases · Bacterial Infections · Viral Infections
- Code
- LOINC 2465-3 · GPL
- Also known as
- Immunoglobulin G, Immune globulin G