Casandra
Casandra Test Code QD22262Version 1 (DRAFT)
Performing Lab
Drug Monitoring, Fentanyl, Quantitative, Urine
Also known as: Pain Management, Prescription Drug Monitoring
Clinical Use
Order TestUse
Urine quantitative testing for fentanyl and its primary metabolite (norfentanyl) supports therapeutic drug monitoring, compliance surveillance, and detection of misuse or diversion in patients prescribed fentanyl products.
Special Instructions
Not provided.
Limitations
Quantitative urine drug levels should not be used to assess dosage because fentanyl is extensively metabolized and excreted—urine concentrations reflect exposure rather than dose. Preserved specimens are unacceptable and will be rejected.
Test Details
Methodology
Mass Spectrometry
Biomarkers
Fentanyl
AnalyteFentanyl • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Norfentanyl
AnalyteNorfentanyl • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
2-3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Urine
Volume
10 mL (9 mL minimum) random urine
Minimum Volume
9 mL
Container
plastic urine container
Collection Instructions
Random urine
Causes for Rejection
Preserved urine
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 5 days |
| Refrigerated | 7 days |
| Frozen | 30 days |