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HelpTest Code LABOXYCU Oxycodone with Metabolite Confirmation, Random, Urine
Additional Codes
| Test Name in EPIC | EPIC Test Code | Mnemonic | Mayo Test ID |
|---|---|---|---|
| OXYCODONE WITH METABOLITE CONFIRMATION, URINE | LABOXYCU | OXYCU | OXYCU |
Useful For
Detection and quantification of oxycodone, oxymorphone, noroxycodone, and noroxymorphone in urine
Reporting Name
Oxycodone w/metabolite Conf, USpecimen Type
UrineOrdering Guidance
For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available. For chain-of-custody testing, order OXYCX / Oxycodone with Metabolite Confirmation, Chain of Custody, Random, Urine.
Additional drug panels and specific requests are available; call 800-533-1710 or 507-266-5700.
Additional Testing Requirements
If urine creatinine is required or adulteration of the sample is suspected, the following test should also be ordered, ADULT / Adulterants Survey, Random, Urine.
Specimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube: Plastic urine container
Submission Container/Tube: Plastic, 5-mL tube
Specimen Volume: 3 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Additional Information:
1. No specimen substitutions.
2. STAT requests are not accepted for this test.
3. Submitting less than 1 mL will compromise our ability to perform all necessary testing.
Specimen Minimum Volume
2.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 14 days |
Reject Due To
| Gross hemolysis | OK |
| Gross icterus | OK |
Clinical Information
Oxycodone is metabolized to noroxycodone, oxymorphone, and their glucuronides and is excreted primarily via the kidney. The presence of oxycodone indicates exposure to oxycodone within 2 to 3 days prior to specimen collection.
Oxymorphone is metabolized in the liver to noroxymorphone and excreted via the kidney primarily as the glucuronide conjugates. Oxymorphone is also a metabolite of oxycodone and, therefore, the presence of oxymorphone could also indicate exposure to oxycodone.
The detection interval for opiates is generally 2 to 3 days after last ingestion.
Reference Values
Negative
Cutoff concentrations by liquid chromatography tandem mass spectroscopy:
Oxycodone: 25 ng/mL
Noroxycodone: 25 ng/mL
Oxymorphone: 25 ng/mL
Noroxymorphone: 25 ng/mL
Interpretation
This procedure reports the total urine concentration; this is the sum of the unconjugated and conjugated forms of the parent drug.
Cautions
Other drugs in the opioid class, such as fentanyl, meperidine, methadone, and opiate antagonists such as naloxone, are not detected.
Method Description
Confirmation with quantification by liquid chromatography tandem mass spectrometry.(Unpublished Mayo method)
Day(s) Performed
Monday through Friday
Report Available
2 to 5 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80365
G0480 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| OXYCU | Oxycodone w/metabolite Conf, U | 94304-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 62616 | Oxycodone-by LC-MS/MS | 16249-5 |
| 42010 | Noroxycodone-by LC-MS/MS | 61425-5 |
| 35965 | Oxymorphone-by LC-MS/MS | 17395-5 |
| 42011 | Noroxymorphone-by LC-MS/MS | 90894-7 |
| 36022 | Oxycodone Interpretation | 69050-3 |
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.