Days Set Up
Monday - Friday
Analytic Time

2 - 3 days

Soft Order Code

Test Updated:



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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

Ultra-performance Liquid Chromatography / Mass Spectrometry (UPLC/MS)

Test Usage

Monitoring fluconazole therapy to guide dose adjustment and ensure adequate coverage while avoiding high concentrations associated with toxicity, especially in patients who have severely compromised renal function, for those who are undergoing dialysis, or for those where absorption may be impacted. Routine drug monitoring is not indicated in most patients.

Reference Range

* 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. EDTA plasma is also acceptable.

Collection Offsite

Collect specimen in a red top tube; do not use SST. Centrifuge, aliquot serum into a plastic vial within 24 hours of collection and freeze. EDTA plasma is also acceptable.

Yellow Top Tube
Red Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.5 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.