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Test Code FIL2S Interleukin 2 Receptor, Soluble

Specimen Type


Specimen Required

Specimen Type: Serum

Container/Tube: Red

Specimen Volume: 1 mL




Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube is acceptable. Spin down within 2 hours of collection and freeze immediately. Send 1 mL of serum frozen in a plastic vial.


Separate specimens must be submitted when multiple test are ordered.

Note: Cytokine levels may demonstrate diurnal variation. For longitudinal comparison, it is recommended that cytokine levels be determined at the same time of day.


Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Frozen 365 days

Reject Due To

Hemolysis NA
Lipemia NA
Icterus NA
Other Contaminated or Heat-inactivated

Reference Values

175.3 pg/mL - 858.2 pg/mL   

Day(s) Performed

Monday, Wednesday, Friday

Report Available

1 to 6 days

Performing Laboratory

ARUP Laboratories

CPT Code Information


Method Name

Quantitative Multiplex Bead Assay

Secondary ID