Casandra
Casandra Test Code LC01625Version 1 (DRAFT)
Performing Lab
Meperidine/Normeperidine, Serum or Plasma
Also known as: Demerol®, Meperitab®
Clinical Use
Order TestUse
Therapeutic drug management
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Mass Spectrometry
Biomarkers
Meperidine
AnalyteMeperidine quantitation • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Normeperidine
AnalyteNormeperidine quantitation • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
LOINC Codes
Order Codes
- 73933-4
- 73934-2
Result Codes
- 73934-2
- 73933-4
Result Turnaround Time
7-14 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
3 mL
Minimum Volume
0.6 mL
Container
Red-top tube or green-top (heparin) tube. Gel‑barrier tubes are not recommended.
Collection Instructions
Serum or plasma should be separated from cells within two hours of venipuncture. Submit serum or plasma in a plastic transport tube.
Patient Preparation
Trough levels are most reproducible.
Causes for Rejection
Gel‑barrier tubes
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Submission/transport (<3 days): Room temperature. |
| Refrigerated | For storage beyond three days, specimen should be refrigerated or frozen. |