Interleukin-4 (IL-4) Serum
Use
The Interleukin-4 (IL-4) Serum test measures the concentration of IL-4 in the serum. IL-4 is a cytokine that plays a significant role in the immune system, primarily in the differentiation of naive helper T cells to Th2 cells, and is crucial in the immune response to allergens. This test can be valuable in assessing immune function and monitoring diseases that involve IL-4 activity, such as certain allergic disorders and conditions characterized by an overactive immune response.
Special Instructions
Ensure that the blood is drawn in a plain red-top or serum gel tube. After collection, the serum should be spun down and sent frozen in a plastic vial to maintain stability.
Limitations
The test may not detect changes in IL-4 levels below the reference limit of <0.5 pg/mL accurately due to the sensitivity of the multiplex array method used. Other substances or conditions affecting cytokine levels might lead to inaccurate measurements or interpretations.
New York Approved
Methodology
Immunoassay (ECLIA)
Biomarkers
LOINC Codes
- 27161-9
- 27161-9
Result Turnaround Time
5-11 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
1 mL
Container
Plastic vial
Collection Instructions
Draw blood in a plain red-top or serum gel tube. Spin down and send 1 mL of serum frozen in a plastic vial.
Causes for Rejection
Thawing: Warm reject; Cold OK
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | Cold OK |
| Frozen | 14 days |