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Test Code 5332 Risperidone (Risperdal) and 9-Hydroxyrisperidone

Performing Laboratory

Medtox Laboratories, Inc.

Specimen Type

Varies


Specimen Required


Submit only 1 of the following specimens:

 

Plasma

 

Specimen Type: Plasma (Preferred)

Container/Tube: Green-top (sodium heparin) tube(s).

Specimen volume: 3 mL

Collection Instructions: Draw blood in a green-top (sodium heparin) tube(s), plasma gel tube is not acceptable. Spin down and send 3 mL sodium heparin plasma refrigerated in a plastic vial.

 

Serum

 

Specimen Type: Serum

Container/Tube: Red-top tube, serum gel is not acceptable.

Specimen volume: 3 mL

Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube is not acceptable. Spin down and send 3 mL of serum refrigerated in a plastic vial.


Specimen Minimum Volume

0.6 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Refrigerated (preferred) 7 days
  Frozen  180 days
  Ambient  72 hours

Reference Values

Units:    ng/mL

 

Expected steady state concentrations of risperidone and 9-hydroxyrisperidone (combined total) in patients receiving recommended daily dosages: 10 - 120 ng/mL.

 

Day(s) and Time(s) Performed

Monday through Sunday

Test Classification

This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

CPT Code Information

80342

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FRISP Risperidone and Metabolite 55157-2

 

Result ID Test Result Name Result LOINC Value
Z1183 Risperidone (Risperdal) 9393-0
Z1056 9-Hydroxyrisperidone 9383-1
Z1057 Combined Total 9394-8

Method Name

Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)