Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

IGG (IMMUNOGLOBIN G)

General Information

Lab Order Codes:

IGG

Synonyms:

Immunoglobulin G

CPT Codes:

82784 – Gammaglobulin; IgG, each

Test Includes:

IgG concentration reported in mg/dL.

Logistics

Test Indications:

Immunoglobulins, also known as humoral antibodies, recognize antigens and initiate mechanisms that destroy antigens. The major immunoglobulin produced by plasma cells is IgG, which makes up 70-75% of the total immunoglobulins. The major function of IgG appears to be neutralization of toxins (bacterial or viral) in tissue spaces.

Lab Testing Sections:

Chemistry

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 day

Special Instructions:

N/A

Specimen

Specimen Type:

Blood

Container:

Green top (Lithium heparin) tube, preferred
Alternate: Red top (plain, no gel) tube

Draw Volume:

0.6 mL blood

Processed Volume:

0.2 mL serum

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Centrifuge specimen, remove serum aliquot into a plastic sample cup. Specimens can be stored at refrigerated temperatures for 7 days. Centrifuge turbid or particulate samples prior to analysis.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimen, turbid samples that do not clear after centrifugation

Interpretive

Reference Range:

Age:

Range (mg/dL):

Newborn:

611 - 1542 mg/dL

1 month:

241 - 870 mg/dL

2 months:

198 - 577 mg/dL

3 months:

169 - 536 mg/dL

4 - 6 months:

165 - 781 mg/dL

7 - 9 months:

282 - 1026 mg/dL

10 months - 1 year:

331 - 1165 mg/dL

2 years:

407 - 1009 mg/dL

3 years:

423 - 1090 mg/dL

4 - 5 years:

445 - 1187 mg/dL

6 - 8 years:

608 - 1229 mg/dL

9 - 10 years:

584 - 1509 mg/dL

>10 years:

734 - 1570 mg/dL

Critical Values:

N/A

Limitations:

N/A

Methodology:

Nephelometry, Siemens Dimension Vista 500

References:

Tietz, Norbert (1999) Textbook of Clinical Chemistry, 3rd edition, Philadelphia, WB Saunders Co, pp 507-509

Siemens Dimension Vista IgG Flex Insert, P/N K705G00E1406, Rev 2011-03



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