Days Set Up
Monday - Sunday
Analytic Time

8 - 12 days

MiChart Code
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

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Test Overview

Test Methodology


Test Usage

Paliperidone (9-hydroxyrisperidone) is the active ingredient in Invega extended-release tablets. Paliperidone is also the major active metabolite of Risperidone. Steady-state concentrations are typically attained within 4 to 5 days of dosing. Following daily administration of 12 mg extended release formulation, paliperidone steady state plasma concentrations ranged from 30 to 40 ng/mL.

Reference Range

Reporting limit determined each analysis

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

Specimen Requirements


Red top only, no SST

Collection Onsite

Collect specimen in a red top tube (NO SST). Send to Specimen Processing

Collection Offsite

Collect specimen in a red top tube (NO SST). Spin and aliquot into a plastic, screw capped tube. Send to Specimen Processing refrigerated

Yellow 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.