| Test Name: |
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Drug Screen, Urine
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| Test Code(s): |
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UPNL / HCUPNL
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| CPT Code(s): |
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80101 x6
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| Test Description: |
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Test Component: Amphetamines/Methamphetamines, Barbiturates, Benzodiazepine, Cocaine, Opiates (primarily targets morphine, codeine, and heroin), and Phencylidine (PCP).
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| Methodology: |
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Enzyme Immunoassay
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| Clinical Significance: |
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If a more comprehensive result is required, the Urine Comprehensive Drug Screen should be ordered.
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour. All requests processed stat.
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Specimen Requirements
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| Specimen: |
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Random urine
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| Collection Instructions: |
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If confirmation by gas chromatography-mass spectrometry or liquid chromatography-tandem mass spectrometry is requested on a specimen with a "screen positive" result, 10 mL of urine is needed for the confirmatory analysis.
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| Collection Container: |
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Preferred: Sterile screw cap container
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| Collection Volume: |
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Preferred: 25 mL
Pediatrics: 10 mL
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| Sample Analyzed: |
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Urine aliquot
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| Volume Required: |
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Preferred: 2 mL
Pediatrics: 0.5 mL
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| Specimen Processing: |
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Refrigerate specimen.
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| Specimen Transport: |
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Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.
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| Stability: |
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Refrigerated: Up to 24 hours.
Frozen: okay
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Interpretation
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Expected Results:
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Qualitative screening test. Results will be reported as "not detected" or " screen positive".
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| Test Limitations: |
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These are screening tests. Results are to be used for medical purposes only.
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| Additional Information: |
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If screening test is reported as "screen positive", confirmation and identification can be made (at additional charge) by gas chromatography - mass spectrometry or liquid chromatography-tandem mass spectrometry. See individual listings for more information on confirmatory testing. The following is a list of cut-off values that are used to determine if the test is "screen positive":
| Amphetamines/ Methamphetamines |
500 ng/mL |
| Barbiturates |
200 ng/mL |
| Benzodiazepine |
200 ng/mL |
| Cocaine (Metabolites) |
300 ng/mL |
| Opiates |
300 ng/mL |
| Phencylidine (PCP) |
25 ng/mL |
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