Casandra
Casandra Test Code QD04131Version 1 (DRAFT)
Performing Lab
Risperidone and Metabolite
Clinical Use
Order TestUse
Therapeutic drug monitoring for antipsychotic therapy, quantifying both risperidone and its active metabolite, 9‑hydroxy‑risperidone, to assess adherence, exposure, and metabolism in patients on risperidone treatment.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
New York Approved
Methodology
Mass Spectrometry
Biomarkers
OH‑risperidone
Analyte9‑Hydroxy‑risperidone • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Risperidone
AnalyteRisperidone • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
LOINC Codes
Result Codes
- 9383‑1
- 9393‑0
- 9394‑8
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
3.0 mL
Minimum Volume
1.5 mL
Container
Red top
Causes for Rejection
Serum separator tube
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 31 days |
| Frozen | 60 days |