Soluble IL 2 Receptor (Sendout)

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General Information

Lab Name
Soluble IL 2 Receptor
Lab Code
RSIL2R
Epic Name
Soluble IL-2 Receptor (Sendout)
External Test Id
2904000
Description

Ordering Recommendation: Used to support attempts to understand the pathogenesis of immune, infectious, allergic, or inflammatory disorders.

Test Information: The soluble interleukin-2 receptor level is measured by a solid-phase, two-site chemiluminescent immunometric assay. A luminometer reads the light produced, converts it to counts per second, and, using the standard curve recorded in the machine, converts to units per mL (U/mL).

Basiliximab binds with the IL-2R in vivo. Results for patients on basiliximab reflect the unbound portion of sIL2R in the plasma sample.

Ordering Requirements: Submit orders via Epic. A completed Cincinnati Children's Hospital requisition is not required.

Forms & Requisitions
Synonyms
2904000, CD25 Soluble, HLH, IL-2R, SIL2R, Soluble CD 25, Soluble CD25, Soluble IL-2R, Soluble Interleukin 2 Receptor
Components
Code Name
RSIL2L Soluble IL 2 Receptor Level
RSIL2C Soluble IL 2 Receptor Comment

Interpretation

Method

Chemiluminescence

Reference Range
See individual components
Ref. Range Notes

Reference Interval:

Age Reference Range
<3 years: 398 - 1940 U/mL
3-7 years: 144 - 1329 U/mL
≥8 Years: 137 – 838 U/mL

Ordering & Collection

Specimen Type
Blood
Collection

Collect 3 mL Whole Blood in EDTA LAVENDER TOP tube

Forms & Requisitions
Handling Instructions

Outside Laboratories: Centrifuge sample and transfer plasma to a separate plastic aliquot. Freeze plasma at immediately at -20°C while awaiting shipment. Transport on dry ice.

  • Note: Plasma must be separated from cells within 24 hours of collection.

Stability: Frozen (required): 6 months; Ambient: Unacceptable; Refrigerated: Unacceptable.

Quantity
Requested: 1 mL EDTA plasma
Minimum: 0.5 mL EDTA plasma

Processing

Receiving Instructions

Centrifuge sample and transfer plasma to a separate vial; freeze immediately at -20°C.

  • Note: Plasma must be separated from cells within 24 hours of collection.

Sendouts:

  • Complete a Cincinnati Children's Diagnostic Immunology Lab Requisition.
  • Order Cincinnati Children's Test: 2904000.
  • Ship FedEx Priority Overnight, Monday through Thursday only, with sufficient dry ice to ensure that samples remain frozen throughout transport.
    • Package samples as close to FedEx pickup as possible to ensure that samples remain frozen upon arrival at Cincinnati Lab.
    • Samples that arrive thawed will be rejected.
    • Saturday delivery is not available for this laboratory.

Stability: Frozen (required): 6 months; Refrigerated: Unacceptable; Ambient: Unacceptable.

Reject Due To: Whole blood sent frozen or 24 hours past stability, blood collected in wrong container/tube type, separated plasma/serum sent room temperature or refrigerated.

Misc Sendout

Performance

Lab Department
Sendouts(SO)
Frequency
Performed: Monday - Friday; Turnaround Time: 30 hours.
Available STAT?
No
Performing Location(s)
Sendout Cincinnati Children's Laboratories
513-636-7355

3333 Burnet Avenue
Cincinnati, OH 45229

Billing & Coding

CPT Codes
83520
LOINC
9654-5
Interfaced Order Code
UOW3994