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Test Code SQ FIL6SM EPIC LAB332 Interleukin 6 (IL-6), Plasma

Specimen Required

Collection Container/Tube: Lavender-top (EDTA)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Immediately after drawing the specimen, place the tube on wet ice.

2. Spin down and separate plasma from cells; 1,500 x g for 10 minutes.

3. Freeze specimen within 30 minutes

Useful For

Evaluation of patients with suspected systemic infection


Evaluation of patients with suspected localized infection, specifically prosthetic joint infection (PJI)

  Evaluation of patients with suspected chronic inflammatory disorders, such as rheumatoid arthritis, systemic lupus erythematosus, ankylosing spondylitis, or inflammatory bowel disease

Method Name


Reporting Name

Interleukin 6, P

Specimen Type

Plasma EDTA

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen (preferred) 21 days
  Refrigerated  24 hours

Reject Due To


Mild OK; Gross OK


Mild OK; Gross reject


Mild OK; Gross OK


Specimens other than EDTA plasma

Reference Values

≤1.8 pg/mL

Day(s) and Time(s) Performed

Thursday, 3 p.m.

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
IL6 Interleukin 6, P 26881-3


Result ID Test Result Name Result LOINC Value
63020 Interleukin 6, P 26881-3