Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

IGE (IMMUNOGLOBULIN E)

General Information

Lab Order Codes:

IGE

Synonyms:

Immunoglobulin E

CPT Codes:

82785 – Gammaglobulin; IgE

Test Includes:

IgE concentration reported in IU/mL.

Logistics

Test Indications:

Immunoglobulin E is a trace protein in serum and its concentration is usually age dependant. IgE is so rapidly and firmly bound to mast cells that only trace amounts of it are normally present in the serum. IgE fights allergens in response to allergic reactions.

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 seven days. Centrifuge turbid or particulate samples prior to analysis.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimen; specimens other than serum; turbid samples that do not clear after centrifugation

Interpretive

Reference Range:

Age:

Range (IU/mL):

<1 year:

0 – 15 IU/mL

1 – 6 years:

0 – 60 IU/mL

7 – 10 years:

0 – 90 IU/mL

11 – 16 years:

0 – 200 IU/mL

>16 years:

0 – 100 IU/mL

Critical Values:

N/A

Limitations:

High levels of rheumatoid factor (>500 IU) may interfere with the assay.

Methodology:

Nephelometry, Siemens Dimension Vista 500

References:

Tietz, NW (1999) Textbook of Clinical Chemistry, WB Saunders Co., Philadelphia, PA, pp 42-50 and pp 507-512

Siemens Dimension Vista RF Flex Insert P/N K7054G00E0804, Rev 8/2011



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