Methodology
Chemiluminescence
Synonyms
HLH; Interleukin 2R; Soluble IL2R; SCD25
Specimen Type
Plasma or Serum
Performing Lab
Cincinnati Children's Diagnostic Immunology
Epic ID
Other Reference Test
Lab Test Days
Monday-Friday
Standard TAT
2 Days
Collection Information
Specimen Required
1-3 mL Blood
Container Type
EDTA (Lavender-Top) Tube
Collection Instructions
1-3 mL serum collected in a (red-top) tube is also acceptable.
Processing Information - Lab Use Only
Transport Temperature
Frozen Only
Specimen Stability
Room Temp: 24 Hours; Refrigerated: 24 Hours; Frozen: 6 Months (Serum/Plasma only)
Rejection Criteria
Whole blood sent frozen; Blood collected in wrong container/tube type; Plasma/serum sent room temp or refrigerated.
Test Volume Required
(two) 0.5 mL Plasma or Serum
Minimum Test Volume
(one) 0.5 mL Plasma or Serum
Processing Instructions
Complete a Cincinnati Children's Diagnostic Immunology requisition and submit with plasma or serum frozen Monday-Thursday only, no weekends or holidays.
CPT Codes
83520
Revised
7/11/25
Initials
SA