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Test Code SIL2R Interleukin-2 Receptor Alpha Soluble, Plasma

Important Note

Place specimen on ice after collection

Additional Codes

 

Epic Ordering Code LAB3041926
NBS code LBC11787
Service code 37118

Reporting Name

IL-2 receptor alpha soluble, P

Specimen Type

Plasma EDTA


Ordering Guidance


If this test is ordered with CYPAN / Cytokine Panel, Plasma, this test will be canceled as duplicate and CYPAN performed as ordered.

 

If this test is ordered with CYTH1 / T-Helper Cell Type 1 Cytokine Panel, Plasma, this test will be canceled as duplicate and CYTH1 performed as ordered.



Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: Lavender-top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Immediately after specimen collection, place tube on wet ice.

2. Centrifuge at 4° C, 1500 x g for 10 minutes.

3. Aliquot plasma a into plastic vial.

4. Freeze specimen within 2 hours of collection.

Additional Information:

If a refrigerated centrifuge is not available, it is acceptable to use a room temperature centrifuge, provided the sample is kept on ice before centrifugation and is frozen immediately afterward.


Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen 21 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Heat-treated specimen Reject

Method Name

Bead-Based Multiplex Immunoassay

Day(s) Performed

Thursday

Report Available

2 to 8 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

Reference Values

<18 years: Not established

≥18 years: <959 pg/mL

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Measuring the concentration of soluble interleukin-2 receptor alpha (sIL-2r alpha) in plasma

 

Aids in the diagnosis and evaluation of patients for lymphoproliferative disorders, including autoimmune lymphoproliferative syndrome, hemophagocytic lymphohistiocytosis, and macrophage activation syndrome

 

May help monitor patients with sarcoidosis or hematologic malignancies with elevated sIL-2r alpha

CPT Code Information

83520

LOINC Code Information

Test ID Test Order Name Order LOINC Value
SIL2R IL-2 receptor alpha soluble, P 76039-7

 

Result ID Test Result Name Result LOINC Value
622328 IL-2 receptor alpha soluble 76039-7

Secondary ID

622328

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.
National University Hospital-Singapore Additional Information:

Last updated 27/07/2026