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HelpTest ID FRISP Risperidone (Risperdal) and 9-Hydroxyrisperidone
Method Name
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Reporting Name
Risperidone and MetaboliteSpecimen Type
VariesSubmit only 1 of the following specimens:
Plasma
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
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) Performed
Monday through Sunday
Report Available
3 daysPerforming Laboratory
Medtox Laboratories, Inc.CPT Code Information
80342