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Soluble IL-2 Receptor (CD25)

Alternate test name

Soluble IL-2 Receptor alpha


IL-2 Receptor



Interleukin 2 Receptor



Lab area
Clinical Biochemistry - Immunology
Method and equipment
The assay is intended for the measurement of soluble interleukin-2 receptor alpha and is conducted on the ProteinSimple Ella automated fluorescence immunoassay analyzer.
Expected turn-around time
7 days (with testing completed twice weekly)
Specimen type

EDTA Plasma

Specimen requirements

2 aliquots (each containing 0.3 mL of EDTA plasma)

Storage and transportation
  • Store and transport frozen.
  • Avoid freeze/thaw cycles.
Special requirements
  • Centrifuge EDTA for 15 minutes at 1000 RCF within 15 minutes of collection
  • Immediately separate and freeze.
Shipping information
The Hospital for Sick Children
Rapid Response Laboratory
555 University Avenue, Room 3642
Toronto, ON
M5G 1X8
Phone: 416-813-7200
Toll Free: 1-855-381-3212
Hours: 7 days/week, 24 hours/day
Background and clinical significance


Disease condition

Hemophagocytic syndrome/ hemophagocytic lymphohistiocytosis

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