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Test Code LAB5403 Voriconazole Level, Serum

Additional Codes

Eurofins-Viracor Test ID
3310

Performing Laboratory

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

Specimen Requirements

Patient Preparation: None

Container/Tube  
Preferred/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 (labeling with specimen type).
Special Instructions: Trough levels should be collected 30-60 minutes before the next dose.

Sample Rejection

Mislabeled or unlabeled specimens

Specimens collected in gel tubes

Logistics

Test Availability: Monday-Sunday
Test set-up: Monday-Saturday
Turnaround Time: 1-2 days; results are available 8-12 hours from receipt in perfoming laboratory

Reference Values

Reference Interval (target therapeutic range): 1.0-5.5 mcg/mL

Critical Values: None established

Methodology

Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)

Limitations

  • Assay range is 0.1-10.0 mcg/mL

Additional Information

FOR SLCH CORE LABORATORY USE ONLY

Lab Processing Instructions: Allow specimen to clot for 30-60 minutes then centrifuge to separate. Aliquot sample into a sterile, leak-proof screw-capped plastic vial for transport.
Processed Volume: 1.0 mL (minimum 0.5 mL) serum 
Transport Temperature: Ambient

Analyte Stability:

Specimen Type Temperature Time
Whole Blood (unprocessed)  Ambient NA
Plasma/Serum (processed) Refrigerated     14 days   
  Ambient  (preferred)    14 days
  Frozen  30 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 FedEx Priority Overnight to: 

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

Test Classification and CPT Code

80285

Test Classification: This test was developed and its performance characteristics determined by Eurofins Viracor. It has not been cleared or approved by the U.S. Food and Drug Administration.

LOINC

38370-3

Last Reviewed

08/2025