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Test Code



Testing performed on Beckman Coulter DxC 700 AU, analyzes with serum testing.

Test Utility

Used to diagnose overdose and in monitoring its levels in patients to ensure appropriate therapy.

Specimen Storage and Stability

Store the serum refrigerated at 2-8C for up to one month or stored frozen at -20C for up to three months.

Specimen Collection and Preparation

Serum sample required. Sample volume needs to be at least 2.0mL Gold Top or Tiger SST. Free from hemolysis, whole blood cannot be used.

Specimen Rejection

  • Improperly labeled

  • Specimen grossly

  • Hemolyzed uncentrifuged

Reference Ranges

10 - 40ug/mL


Monday - Saturday, 16 hours a day.

Result available after getting the specimen in 5 hours.

STAT results available within 2 hours of receipt in the Laboratory.

*NOTE: All Specimen Refrigerated (2-8°C) for 7 days only.


Vibra Health Laboratory

Phone: (248) 846-0663

1307 Allen Dr, Suite A, Troy, MI 48083

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