Interleukin-4
| Abbrev Code: | IL4 | ||
| Order Code: | LAB3058 | Order Name: | Cytokine IL-4 |
| Synonyms: | IL-4; IL4; Cytokines; Interleukin 4 | ||
| Methodology: | Enzyme-linked immunosorbent assay | ||
| CPT Codes: | 83520 x1 | ||
| Turnaround Time: | Performed Mon-Fri; results are reported within 5 working days. | ||
| Compliance: | Commercial kit validated by the testing laboratory, but not FDA approved for diagnostic use. |
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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) Alternate Containers: Plastic leakproof container, sterile, Sterile tube |
| Causes for Rejection: | Gross hemolysis; stored at room temperature >3 hours |
Processing and Shipping
| Specimen Processing: |
Aliquot into two vials with 500 uL per vial. Freeze immediately at ≤20°C. (-80°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) |
Interpretive
| Reference Range: |
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