Pentyluracil (C5:5-Dihydrouracil) in Urine, Mass Concentration
This test measures the amount of pentyluracil, a breakdown product of certain medications or metabolic compounds, in your urine. It may be used to monitor drug metabolism or detect unusual metabolic processes.
["This test helps assess how your body processes certain substances, often linked to medication metabolism or genetic conditions."]
Key facts at a glance
- LOINC
- 78880-2
- Short code
- RCS-4 5OH-pentyl Ur Cfm-mCnc
- Synonyms
- RCS-4 5OH-pentyl Ur Cfm-mCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- confirm
- 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
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you’re taking medications that break down into pentyluracil, if you have a suspected metabolic disorder, or if you’re part of a research study investigating drug metabolism. It can also help monitor how well your kidneys are filtering waste products from your blood.
What to Expect Before the Test
No special preparation is typically needed, but you may be asked to collect a 24-hour urine sample. Follow your provider’s instructions carefully to ensure accurate results. Avoid certain foods or medications that might interfere with the test if directed.
During the Test
You’ll likely provide a urine sample in a container provided by the lab. The sample is sent to a lab where it’s analyzed to measure pentyluracil levels. The process is quick and painless.
What the Results Mean
Results are compared to a reference range specific to the test method used. Elevated levels might suggest abnormal drug metabolism, kidney issues, or other metabolic conditions. Your provider will discuss the results with you in detail.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Pentyluracil Urine Test
Frequently asked questions
What does it measure?
What are common reasons for ordering this test?
How long does it take to get results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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