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HelpRisperidone (Risperdal) and 9-Hydroxyrisperidone
Specimen Required
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.
CMH COLLECTION: 2 mL in red gel vacutainer
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Refrigerated (preferred) | 7 days | |
| Frozen | 180 days | ||
| Ambient | 72 hours |
Reject Due To
| Hemolysis | NA |
| Lipemia | NA |
| Icterus | NA |
| Other | NA |
Day(s) Performed
Monday through Sunday
Report Available
3 to 7 daysReporting Name
Risperidone and MetaboliteReference 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.
Method Name
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Performing Laboratory
Medtox Laboratories, Inc.CPT Code Information
80342
Specimen Minimum Volume
0.6 mL
Specimen Type
VariesLOINC 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 |