Sunquest Code:IL4  
Epic Code:LAB3058Epic Name:CYTOKINE IL-4
Synonyms:IL-4; IL4; Cytokines; Interleukin 4
Methodology:Enzyme-linked immunosorbent assay
Turnaround Time:Performed Mon-Fri; results are reported within 5 working days.

Commercial kit validated by the testing laboratory, but not FDA approved for diagnostic use.

Collection Instructions

Specimen:Blood or CSF; contact Cytokine Reference Laboratory for other specimen types
Optimal Volume:4 mL blood; 2 mL CSF
Minimum\Peds Volume:2.2 mL blood; 1.0 mL CSF
Container:Red (no gel) (Plastic leakproof container, sterile, Sterile tube)
Causes for Rejection:Gross hemolysis; stored at room temperature >3 hours

Processing and Shipping

Specimen Processing:

Allow samples to clot for 30 minutes from time of collection. Centrifuge for 15 minutes at 1000-1500 g (rcf) at room temperature.


Aliquot into two vials with 500 uL per vial. Store samples at ≤-20°C (-70°C preferred). Contact Cytokine Lab if there is adequate sample for only one vial.


Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Lab Sendouts  (UMCytokine)


Reference Range:


0.25 pg/mL


Reference range not determined



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