Interleukin-2 by Multiplex Bead Assay

Sunquest Code:INTLK2  
Epic Code:LAB3111Epic Name:Interleukin 2
Synonyms:IL-2; IL2; IL 2
Methodology:Multiplex bead assay
CPT Code:83520
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-4 days.

This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:0.8 mL
Container:Red or gold (gel) (Green (lithium heparin, gel), Red (no gel))

Processing and Shipping

Specimen Processing:Centrifuge and aliquot within 2 hours of collection, 1 mL, 0.3 mL minimum. Freeze within 30 minutes.
Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:51588 (IL2 DO)


Reference Range:12 pg/mL or less

Interleukin 2 (IL-2) is a glycoprotein produced by activated T-cells that has a variety of immunologic functions, the most notable being the ability to promote the proliferation and maturation of activated T-cells. Decreased production of this cytokine has been associated with the following disease states: systemic lupus erythematosus (SLE), Hodgkin’s disease, lepromatous leprosy and AIDS. The ability of IL-2 to stimulate natural killer cells and enhance their cytotoxicity has led to the combined usage of IL-2 and LAK cells for the treatment of certain cancers.


Results are to be used for research purposes or in attempts to understand the pathophysiology of immune, infectious or inflammatory disorders.


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