Days Set Up
Monday, Thursday
Analytic Time

5 - 6 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

High Performance Liquid Chromatography (HPLC)

Test Usage
Reference Range

Amphotericin B steady-state peak levels after intravenous administration: Mean adult peak level (3 mg/kg as sulfate): 2.6 mcg/mL; Mean adult peak level (4 mg/kg as sulfate): 2.9 mcg/mL; Mean adult peak level (1 mg/kg as lipid): 12.2 mcg/mL; Mean adult peak level (2.5 mg/kg as lipid): 31.4 mcg/mL; Mean adult peak level (5 mg/kg as lipid): 83.0 mcg/mL.

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

Specimen Requirements

Collection Offsite

Collect specimen in a red top; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze. Protect specimen from light (place in brown plastic bag or aliquot into brown tube). Collect Peak specimen 30 minutes after the end of an I.V. infusion (one hour following I.M. or oral administration) or Trough specimen immediately before next dose is given.

Yellow Top Tube
Red Top Tube
Normal Volume
2 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.