Laboratory Lab results are too important to go anywhere else.

Risperidone and Metabolite

Risperdal Level

Test Codes

EPIC: LAB851, Beaker: XRISP, MAYO: FRISP

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One dark Green-top sodium heparin tube.
Also acceptable: One plain Red-top tube.

Do not use Serum Separator Tubes.

Physician Office/Draw Specimen Preparation

Centrifuge to separate serum or plasma from cells within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 2.0 mL serum or plasma, refrigerated (2-8°C or 36-46°F). (Minimum: 0.6 mL)

Rejection Criteria

• Serum Separator (SST) tubes.
• Specimens not collected and processed as indicated.

In-Lab Processing

Centrifuge to separate serum or plasma from cells within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Transport: 2.0 mL serum or plasma, refrigerated (2-8°C or 36-46°F). (Minimum: 0.6 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 72 hours
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 180 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Clinic Laboratories in Rochester, MN. Forwarded to Medtox Laboratories.

Performed

Monday – Sunday.
Results available in 3-7 days.

Reference Range

By report.

Test Methodology

Quantitative Liquid Chromatography – Tandem Mass Spectrometry (LC-MS/MS).

CPT Codes

80342

Contacts

Last Updated

11/18/2024