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Oxycodone Mass Concentration in Plasma (Screening)

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

This test measures the amount of oxycodone, a prescription pain medication, in your blood plasma. It helps determine if you’ve recently taken this drug.

Quick summary

["This screening checks for recent oxycodone exposure, often used in medical evaluations or legal cases."]

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

Key facts at a glance

LOINC
77730-0
Short code
oxyCODONE SerPlBld Cfm-mCnc
Synonyms
oxyCODONE SerPlBld Cfm-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your doctor may order this test if you’ve been prescribed oxycodone, are suspected of drug use, or are undergoing a medical review. It can also be part of a broader substance screening, such as for pain management or addiction assessment.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. If you’re taking blood thinner medications, let your provider know beforehand.

What the Test Results Mean

Results show the current level of oxycodone in your blood. High levels may indicate recent use, while very low or absent levels suggest no recent exposure. Confirmatory testing (e.g., a different method) may be needed for definitive results.

Common Uses and Limitations

This test is primarily a screening tool. It may not detect all forms of oxycodone (e.g., metabolites) or recent use if taken shortly before testing. Confirmatory tests (e.g., urine drug screens) may be required for legal or clinical confirmation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Oxycodone levels can indicate recent drug ingestion, which may affect your medical treatment, pain management, or legal outcomes. High levels could also signal dependence or misuse. Always discuss results with your healthcare provider.

Short name

Oxycodone Plasma Screen

Frequently asked questions

How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on lab processing times. Follow-up with your provider if you have questions about your specific results.
What does a positive result mean?
A positive result means your blood plasma contains detectable amounts of oxycodone. This does not always mean you’re currently experiencing effects—it only shows recent exposure. Your doctor will interpret results in the context of your medical history and symptoms.
Can I drink alcohol before this test?
Alcohol consumption before the test may not affect the test itself, but it can impact your overall health and how your body processes medications. Avoid excessive alcohol use before testing, especially if you’re on other medications.
  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