Fentanyl-Urine Screen

Label Mnemonic:	FENU
Epic code:	LAB9518
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Chemistry
6240 RCP
356-3527

Specimen(s):

Urine Screen

Collection Medium:

Clear top tube

Alternate Collection Media:

Urine (Random)-BD Vacutainer^®, no additive yellow top

Minimum:

5 mL random urine

Turn Around Time:

1 hour (upon receipt in laboratory)

Reference Range:

None

Interpretive Data:

Drug of abuse screening tests are to be used for medical purposes only and not for non-medical purposes (e.g., employee, competitive athlete, or forensic testing).

Comments:

Screen includes fentanyl metabolites only. To order the full drug of abuse-urine panel, see "Drugs of Abuse Screen."

Test cut off: 5 ng/mL for norfentanyl (metabolite).

If quantitative confirmation is needed for fentanyl, call the Laboratory at 356-3527. Allow up to seven days for confirmatory results.

Quantitative confirmation is at an additional charge.

Drug	Approximate cut-off for fentanyl assay (ng/mL)
Fentanyl	3.8
Norfentanyl	5
Acetyl Fentanyl	7
Acryl Fentanyl	4
Butyryl Fentanyl	6
Cyclopropyl Fentanyl	3.2
Furanyl Fentanyl	5.5
Para-fluoro Fentanyl	3.2
Carfentanil	No cross-reactivity
Despropionyl Fentanyl (4-ANPP)	No cross-reactivity
U-47700	No cross-reactivity

Test Limitations:

There is the possibility that other substances and/or factors may interfere with the test and cause erroneous results (e.g., technical or procedural errors). Call the lab at 319-356-3527 for additional information.

Methodology:

Homogeneous enzyme immunoassay

CPT Code:

80354

See also:
Drugs of Abuse, Urine
Drugs of Abuse, Urine + Confirm
Fentanyl and Metabolite Confirmation, Random Urine