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Test Code UFNT or LAB3460 Fentanyl Screen, Urine

Important Note

Drug screens performed at Bronson Laboratory are for medical purposes only. No chain of custody or specimen adulteration testing is performed. All positive results are presumptive. A presumptive positive means that this screening method is positive. A more specific alternative method must be used to obtain a confirmed analytical result. Confirmatory testing is available on request through our reference lab, Mayo. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly with presumptive positive results.

If employment/legal drug screening is required, contact ProHealth Management Services at 269-341-7547.

Specimen Requirements

Container Type:

Sterile urine cup

 

 
Optimal Collection Volume: 

5 mL
Minimum Volume:

1 mL
Collection Instructions:

1. Collect a random urine specimen from the patient.

2. Ensure the lid is secured tightly before sending it to the lab.

3. Ensure that no preservatives are used.
Specimen Transport:

Refrigerate
Processing Instructions: 

1. Pour off urine into a labeled aliquot tube.

2. Centrifuge the urine aliquot.

3. Deliver the urine aliquot to the chemistry department.

Specimen Stability

Specimen Type Temperature Time
Urine Refrigerated 7 days

Specimen Rejection Criteria

Adulterated urine specimen

Useful For

Detecting drug abuse involving fentanyl.

Methodology

Roche Cobas - Homogeneous enzyme immunoassay

Reference Ranges

Negative

 

Note: This assay detects fentanyl at 3.8 ng/mL and higher. Structural analogs of fentanyl are also detectable. The major metabolite norfentanyl is detectable at 5 ng/mL.

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo, Battle Creek, Paw Paw, South Haven

Sample Retention Time

7 days

CPT Code

80307

LOINC Code

59673-4

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