Interleukin 4, Serum
Also known as: IL4 DO
Use
Primarily, this test is utilized for research purposes and to aid in understanding the pathogenesis of immune, infectious, allergic, or inflammatory disorders. The results help in comprehending the pathophysiology of these conditions, allowing researchers and clinicians to gain deeper insights into immune system behaviors and responses under various pathological states.
Special Instructions
Cytokine levels may demonstrate diurnal variation, so for longitudinal comparison, it is recommended that cytokine levels be determined at the same time of day.
Limitations
This test is a Laboratory Developed Test (LDT) and has not been cleared or approved by the US Food and Drug Administration. Performance characteristics have been determined by ARUP Laboratories, and it is intended for clinical purposes in a CLIA certified laboratory. Refrigerated or contaminated specimens, as well as those subjected to heat inactivation, are unacceptable for analysis.
New York Approved
Methodology
Immunoassay (Multiplex Protein Panel)
Biomarkers
LOINC Codes
- 27161-9
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.4 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Collect serum using a serum separator tube or plain red. Separate serum from cells as soon as possible or within 2 hours of collection.
Storage Instructions
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Ship in an ARUP Standard Transport Tube.
Causes for Rejection
Refrigerated specimens, contaminated specimens, or those that have been heat-inactivated.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 30 minutes |
| Refrigerated | Unacceptable |
| Frozen | 1 year |