Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

INTERLEUKIN-4

General Information

Lab Order Codes:

IL4

Synonyms:

IL-4

CPT Codes:

83520 - Immunoassay, analyte, quantitative; not otherwise specified

Test Includes:

Interleukin-4 level reported in pg/mL.

Logistics

Test Indications:

N/A

Lab Testing Sections:

Chemistry - Sendouts

Referred to:

Fairview University Diagnostic Laboratories (Test# IL4)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

5 days, test performed Monday - Friday

Special Instructions:

N/A

Specimen

Specimen Type:

Blood (serum) or CSF

Container:

Blood: Red top (plain, no gel) tube

CSF: Screw-capped, sterile vial

Draw Volume:

Blood: 4 mL

CSF: 2 mL

Processed Volume:

Serum: Minimum: 1.2 mL

CSF: 1 mL (Minimum: 0.5 mL)

Collection:

Routine venipuncture or CSF collection

Special Processing:

Lab Staff:
Allow sample to clot for 30 minutes before centrifugation. Centrifuge for 15 minutes at 1000-1500 g at room temperature, remove serum and aliquot into two vials with at least 500 uL per vial.

Store ( -70 degrees preferred) and ship at frozen temperatures. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Gross hemolysis; stored at room temperature > 3 hours

Interpretive

Reference Range:

Serum

< or = 0.25 pg/mL

CSF

Reference range not determined

Critical Values:

N/A

Limitations:

N/A

Methodology:

Enzyme-linked immunosorbent assay

References:

Fairview Diagnostic Laboratories Web Page http://labguide.fairview.org/ (June 2013)



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