8 - 12 days
Test Updated:
Looking to order a test?
We’ve provided helpful links to make ordering easy.
Find a RequisitionAll specimens should be accompanied by a requisition.
Submitting SpecimensLearn about how to properly label and where to ship specimens.
Order Kits and SuppliesMLabs provides all the supplies necessary for the collection of specimens.
Test FAQVisit our provider FAQ and learn about common questions to ordering tests.
Test Overview
LC-MS/MS
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.
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
Collect specimen in a red top tube (NO SST). Send to Specimen Processing
Collect specimen in a red top tube (NO SST). Spin and aliquot into a plastic, screw capped tube. Send to Specimen Processing refrigerated