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Test Code FENTU Fentanyl, Qualitative Screen, Urine

Specimen and Container/Tube

Specimen Type: Urine, Random Collection

Preferred Specimen: Sterile Plastic Container

Other Acceptable specimens: Sterile Clean Glass Container

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

  • Collect specimen per standard collection procedure and send to laboratory immediately. 
  • No preservatives or additives.

 

UCMC Offsite and UC MedLab Outreach Instructions: 

  • Samples should be centrifuged within 2 hours of collection
  • No preservatives or additives
  • Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
  • Aliquot urine into plastic tube containing a minimum of 0.2 mL of specimen.
  • Urine samples must then be sent refrigerated at 2-8oC.

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits. 
  • Specimens that are collected with preservatives or additives.

Reference Values

Test

Age

Sex

Reference Range

Fentanyl

All

All

None Detected

Critical Values

Analyte

Unit

Low

High

Age

N/A

N/A

N/A

N/A

N/A

CPT Codes

80307

LOINC Codes

19270-8

Volume

Preferred Volume: 3.0 mL

Minimum Volume: 1.0 mL

Specimen Stability

Storage Temperature

Stability

Room temperature

4 weeks

Refrigerated

4 weeks

Frozen

6 months

Collection Instructions

  • Collect specimen per standard laboratory collection procedures. 
  • No preservatives or additives.

Test Components

Fentanyl Screen

Clinical Indications

  • For medical purposes only. 
  • Qualitative screening for norfentanyl in urine.
  • The cutoff for the assay is 5 ng/mL norfentanyl.
  • This test must not be used for employee drug testing or other purposes requiring a chain of custody handling procedure.

Methodology

Homogeneous Enzyme Immunoassay (Roche Diagnostics)

Additional Information

  • Results should always be assessed in conjunction with patient's medical history, clinical examination and other findings.
  • Also included in urine toxicology screen; EDS order code.
  • The Emergency Drug Screen (EDS) includes screening tests for Ethanol, Amphetamines, Barbiturates, Benzodiazepines, Cocaine Metabolite, Opiates, Phencyclidine, Methadone Metabolite, Oxycodone and Fentanyl Metabolite.
  • All positive results are considered presumptive unless confirmed by an alternate method.
  • Cutoff values used to discern positive from None Detected: 5 ng/mL or greater. The concentration of drug detected cannot be estimated by this qualtitaive method.

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

 

STAT Turnaround Time: 1 hour

Routine Turnaround Time: 4 hours

Testing Schedule: 24/7

Synonyms/Keyword Search

DAT: Drugs of Abuse Testing, FENTU, fentanyl, norfentanyl

Last Review Date

8/19/2024