Oxycodone Concentration in Plasma (24-Hour Urine or Plasma Screening/Confirmation)

Why This Test Is Done

Your healthcare provider may order this test if you’re being evaluated for pain management, suspected opioid misuse, or to confirm whether you’ve taken prescribed medications as directed. It can also be part of a broader drug screening process, such as pre-employment checks or legal investigations.

How the Test Works

The test uses a specialized laboratory method to identify and measure oxycodone in your body fluids. Urine samples are often collected over a 24-hour period, while blood/plasma samples capture recent exposure. The results help determine if the drug was present at detectable levels.

Sample Collection and Preparation

For urine testing, you’ll typically provide a 24-hour urine sample collected in a sterile container. For blood/plasma testing, a small blood draw is needed. Follow your provider’s instructions carefully to ensure accurate results.

What to Expect During the Test

Urine collection may require multiple voids over 24 hours, while blood draws are quick and done in a clinic or lab setting. No special preparation is usually needed, but avoid drinking alcohol or certain medications that could interfere with results.