Skip to content

Oxycodone and Creatinine, Urine

Published: August 9, 2026Updated: August 16, 2026

This test detects oxycodone in urine. Urine creatinine may also be reported to help evaluate the concentration of the urine sample.

Quick summary

["A urine oxycodone result can show whether oxycodone was present in the body before the sample was collected."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
58395-5
Short code
oxyCODONE/Creat Ur
Synonyms
oxyCODONE/Creat Ur
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

This test measures oxycodone, an opioid pain medicine, in a urine sample. It may also include a urine creatinine measurement, which can help show how concentrated or diluted the sample is.

Why might I need this test?

A urine oxycodone test may be used to monitor prescribed opioid therapy, support evaluation of suspected drug use, or confirm a positive screening result. The result should be interpreted alongside the person's medications, medical history, and other tests.

How is the test performed?

You provide a urine sample in the container specified by the laboratory. The laboratory analyzes the sample for oxycodone, and any required screening result may be confirmed using a more specific method.

How do I prepare for the test?

Follow the laboratory's collection instructions and tell the clinician about all prescription medicines, over-the-counter products, and supplements you have used. The timing of the last dose and the amount of water in the urine can affect the result.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine oxycodone

Frequently asked questions

Does a positive urine test mean someone misused oxycodone?
No. A positive result may reflect prescribed use, another medication that produces a similar test signal, or nonprescribed use. The result must be reviewed with the clinical situation.
How long after taking oxycodone can it be detected in urine?
Detection varies among individuals and depends on the dose, frequency of use, metabolism, hydration, and other factors. The laboratory or clinician can provide guidance relevant to the situation.
Why is urine creatinine included?
Urine creatinine can help assess how concentrated or diluted a urine specimen is. This may help the laboratory interpret the oxycodone measurement, but it does not determine exactly when or how much oxycodone was taken.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy