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Test Code LAB71 IgG

Clinical Information

Increased serum immunoglobulin concentrations occur due to polyclonal or oligoclonal immunoglobulin proliferation in hepatic disease (hepatitis, liver cirrhosis), connective tissue diseases, acute and chronic infections, as well as in the cord blood of neonates with intrauterine and perinatal infections. Elevation of IgA may occur in monoclonal gammopathies such as multiple myeloma, primary systemic amyloidosis, monoclonal gammopathy of undetermined significance, and related disorders. Decreased levels are found in patients with primary or secondary immune deficiencies. Electrophoresis is usually required to interpret an elevated immunoglobulin class as polyclonal versus monoclonal. Immunofixation is usually required to characterize a monoclonal protein. 

Synonym

  • IGG

Specimen Required

Preferred Container/Tube: Gold SST Top
Acceptable Container/Tube: Gold SST Top
Specimen Volume: 3 mL
Specimen Minimum Volume: 1 mL

Specimen Stability Information

Ambient: 4 hours
Refrigerated: 5 days

Rejected Due To

  • Gross hemolysis
  • Gross icterus
  • Quantity not sufficient
  • Quality not acceptable

Reference Values

FEMALE MALE
0-30 days: 162-872 mg/dL
31-182 days: 311-664 mg/dL
183-365 days: 325-647 mg/dL
1-3 years: 451-1,202 mg/dL
4-6 years: 560-1,319 mg/dL
7-9 years: 485-1,473 mg/dL
10-12 years: 586-1,609 mg/dL
13-15 years: 749-1,640 mg/dL
16-18 years: 804-1,817 mg/dL
19-59 years: 600-1,714 mg/dL
60+ years: 600-1,560 mg/dL		 0-30 days: 197-833 mg/dL
31-182 days: 140-533 mg/dL
183-365 days: 130-823 mg/dL
1-3 years: 413-1,112 mg/dL
4-6 years: 468-1,328 mg/dL
7-9 years: 582-1,441 mg/dL
10-12 years: 685-1,620 mg/dL
13-15 years: 590-1,600 mg/dL
16-18 years: 522-1,703 mg/dL
19-59 years: 600-1,714 mg/dL
60+ years: 600-1,560 mg/dL

Method Description

Turbidimetry

Performing Lab

Clinical Lab UH

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 day

Reporting Name

IgG

CPT Code Information

82784

LOINC Code Information

2465-3