Days Set Up
Monday - Sunday
Analytic Time

2 - 3 days

MiChart Code
Voriconazole Level
Soft Order Code

Test Updated:


Voriconazole Level

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Test Overview

Test Methodology

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

Test Usage

Monitoring peak levels of voriconazole, especially in individuals with reduced liver function, individuals with CYP2C19 polymorphisms associated with poor metabolic funtion, or individuals taking medications that affect CYP2C19 activity.

Reference Range

1.0 - 5.5 mcg/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in a red top tube; do not use SST tube. Send immediately to Specimen Processing. Tube must be spun and aliquotted within 2 hours of collection.

Collection Offsite

Collect specimen in a red top tube; do not use SST tube. Centrifuge within 2 hours of draw, aliquot serum into a plastic vial and refrigerate.

Red Top Tube
Normal Volume
2 mL serum
Minimum Volume
0.6 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.