Interleukin-4 (IL-4), Serum

Catalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.

What this laboratory test evaluates

DetailsInterleukin-4 (IL-4), Serum – Cytokines have emerged as molecules of importance in the regulation of many immunologic processes in the cell. The ability to accurately measure QN and QL differences in cytokine production is becoming increasingly important to the understanding of normal and pathological processes.

What type of sample is required for this test?1 mL serum

Test ResourcesFor more information, please consult your healthcare provider.

Additional test information

Interleukin-4 (IL-4), Serum – Cytokines have emerged as molecules of importance in the regulation of many immunologic processes in the cell. The ability to accurately measure QN and QL differences in cytokine production is becoming increasingly important to the understanding of normal and pathological processes.

Collection and processing

• Sample type: Serum
• Fasting: No
• Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected

How Sunridge uses laboratory information

Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.

Before requesting this test

Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.