Interleukin-6 (IL-6), Serum

Test Code

34473

CPT Codes
83529

Preferred Specimen

1 mL frozen serum

Patient Preparation
No biotin supplements 48 hours prior to blood draw.

Minimum Volume

0.5 mL

Instructions

Do not thaw. Cytokine levels may demonstrate diurnal variation. Recommend cytokine levels be determined at the same time of day for improved longitudinal comparison.
Icteric (acceptable)

Transport Container

Transport tube

Transport Temperature

Frozen

Specimen Stability

Room temperature: 24 hours
Refrigerated: 48 hours
Frozen: 7 months

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Received room temperature • Received refrigerated • Gross hemolysis

Methodology
Immunoassay (IA)

FDA Status
This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.

Setup Schedule

Thursday Night Report available: 6 Days

Reference Range

<5.00 pg/mL

Clinical Significance

To evaluate the level of IL-6 in serum samples.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.