Fentanyl and Metabolite Confirmation, Urine




Test Mnemonic

UFENT

CPT Codes

  • G0480 - QTY (1)
  • 80354 - QTY (1)

Aliases

  • Innovar
  • Sublimaze

Includes

  • Fentanyl
  • Norfentanyl

Performing Laboratory

Other


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
10 mLUrine, randomClean container Refrigerated 

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2.5 mL     

Stability

Environmental Condition Description
Ambient3 days
Refrigerated2 weeks
Frozen2 weeks

Days Performed

4 days per week

Turnaround Time

2 - 5 days

Methodology

Name Description
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) 

Reference Range

Fentanyl, Urine
Sex Age From Age To Type Range Range Unit
       < 6 ng/mL 
Norfentanyl, Urine
Sex Age From Age To Type Range Range Unit
       < 6 ng/mL 
Specimen Validity Chromate, Urine
Sex Age From Age To Type Range Range Unit
       Normal<50mg/L
Specimen Validity Creatinine, Urine
Sex Age From Age To Type Range Range Unit
   Years  YearsNormal20.0-300.0mg/dL
Specimen Validity Nitrite, Urine
Sex Age From Age To Type Range Range Unit
       Normal<500mg/L
Specimen Validity Oxident, Urine
Sex Age From Age To Type Range Range Unit
       Normal<200mg/L
Specmine Validity pH, Urine
Sex Age From Age To Type Range Range Unit
       Normal4.5 - 8.0 
Specmine Validity Specific Gravity, Urine
Sex Age From Age To Type Range Range Unit
       Normal1.003 - 1.035 

Special Info

For medical purposes only; not valid for forensic use. Confirmation testing is not included with this analysis. Specimen Validity Testing (SVT) analytes have a stability of up to 5 days at 2-8°C as stated in the IFU.  Based on the laboratory’s studies, this stability is based on samples that have reached an equilibrium.  Introduction of oxidants to a urine sample will not be stable until an equilibrium is achieved.  Time to reach equilibrium will vary dependent on the type and amount of oxidant used as an adulterant.

Clinical Info

For Specimen Validity Interpretations, the following rules are applied: Diluted: Creatinine is greater than or equal to 2mg/dL but less than 20mg/dL and Specific Gravity is less than 1.003. Substituted: Creatinine is less than 2mg/dL and the Specific gravity is less than 1.003 or greater than or equal to 1.020. Adulterated: pH is less than 4 or greater than or equal to 11; Nitrite is greater than or equal to 500mg/L; Chromate is greater than or equal to 50mg/L; Oxidant is greater than or equal to 200mg/L.