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Test Code 1257 Interleukin-6 (IL-6), Serum

Additional Codes

Eurofins-Viracor Test ID
1257

EPIC Order: Miscellaneous Lab Test (LAB000)

Performing Laboratory

St. Louis Children's Hospital Sendouts to Eurofins-Viracor

Specimen Requirements

Patient Preparation: None

Container/Tube  
Preferred: Gold SST gel tube

Acceptable: Plain red-top tube
Collection Volume: 2.0 mL (minimum 1.0 mL)

Submission Container/Tube: If specimen is coming from outside facility aliquot processed sample into a plastic vial for transport. Place transport tube in dry ice to freeze STAT and send on dry ice.
Special Instructions: None

Sample Rejection

Mislabeled or unlabeled specimens

Logistics

Test Availability: Monday-Sunday
Test set-up: Varies
Turnaround Time: 3-5 days from receipt in perfoming laboratory

Reference Values

Reference Interval: The reference range for a healthy population is less than 1.8 pg/mL. However it should be noted that these ranges are obtained from a limited population of apparently healthy adults and are not diagnostic thresholds.

Critical Values: None established

Methodology

Multiplex array format with Meso Scale Discovery (MSD®) Sector Imager 2400. MSD Cytokine assays measure from one to ten cytokines in a 96 well MULTI-SPOT plate. The assay employs a sandwich immunoassay format. MSD technology uses electrochemiluminescence detection; a CCD camera allows for the quantification of light emitted from each spot in each well. MSD software generates a standard curve to determine sample cytokine concentrations.

Limitations

  • Assay range is 4 - 4000 pg/mL

Additional Information

FOR SLCH CORE LABORATORY USE ONLY

Lab Processing Instructions: Centrifuge to separate. Aliquot sample into a sterile, leak-proof screw-capped plastic vial for transport. Place aliquot in dry ice to freeze STAT
Processed Volume: 1.0 mL (minimum 0.5 mL) serum 
Transport Temperature: Frozen 

Analyte Stability:

Specimen Type Temperature Time
Whole Blood (unprocessed)  Ambient NA
Plasma/Serum (processed) Refrigerated     NA  
  Ambient   NA
  Frozen (preferred)    14 days    

Ship Monday through Friday. Friday shipments must be labeled for Saturday delivery. A Eurofins-Viracor test requistion form must accompany each specimen. 

Ship specimens on dry ice by FedEx Priority Overnight to: 

   Eurofins Viracor, 18000 W 99th St. Ste,  #10, Lenexa, KS 66219

Test Classification and CPT Code

83529

Test Classification: This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration

LOINC

NA

Last Reviewed

08/2025