Fentanyl and Metabolite

Label Mnemonic:	FENU
Epic code:	LAB7284

Commercial Mailout Laboratory
6240-8 RCP
356-8593

Specimen(s):

Random Urine

Collection Medium:

Yellow top round bottom tube (no additive)

Minimum:

Preferred Minimum: 4 mL urine (with no additives or preservatives)
Absolute Minimum: 0.5 mL urine

Rejection Criteria:

Specimens exposed to repeated freeze/thaw cycles.

Turn Around Time:

1-4 days upon receipt at reference laboratory

Reference Range:

Fentanyl - 1.0 ng/mL
Norfentanyl - 1.0 ng/mL

Interpretive Data:

For medical purposes only; not valid for forensic use.
Drugs covered: fentanyl and metabolite (norfentanyl).
Positive cutoff: 1.0 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 value must be greater than 
or equal to the cutoff to be reported as positive. Interpretive 
questions should be directed to the laboratory.

Methodology:

Quantitative Liquid Chromatography-Tandem Mass Spectrometry

CPT Code:

80354

See Additional Information:
Urine Tests Requiring no Preservatives