Useful for general screening in contexts of compliance and/or abuse. A screen with reflex testing is the preferred method for ruling out fentanyl exposure. For follow-up testing of a presumptive result, Fentanyl and Metabolite, Urine Quantitative (0092570) is preferred.
Qualitative Enzyme Immunoassay/Quantitative Liquid Chromatography - Tandem Mass Spectrometry
Transfer 4 mL urine with no additives or preservatives in ARUP Standard Transport Tubes. (Min: 1 mL)
Specimens exposed to repeated freeze/thaw cycles. Samples collected in tubes with additives or preservatives.
Ambient: 1 month; Refrigerated: 1 month; Frozen: 9 months
Screen cutoff Concentration: 2 ng/mL
The absence of expected drug(s) and/or drug metabolite(s) may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, diluted/adulterated urine, or limitations of testing. The concentration at which the screening test can detect a drug or metabolite varies. Specimens for which drugs or drug classes are detected by the screen are reflexed to a second, more specific technology (GC/MS and/or LC-MS/MS). The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.
For medical purposes only; not valid for forensic use.
If the specimen screens positive, then Confirmation/Quantitation by LC-MS/MS (ARUP test code 0092570) will be added to confirm result. Additional charges apply.
80307; if reflexed, add 80354 (Reflexed Alt Code: G0480 )
|Component Test Code*||Component Chart Name||LOINC|
|2012212||Screen, Urine Interpretation||54247-2|
|2012285||Fentanyl, Urn, Screen||11235-9|
- Fentanyl and Metabolite
- fentanyl and norfentanyl blood levels