C-reactive protein (CRP) with 24-hour urine collection for end-of-treatment monitoring
This test measures the level of C-reactive protein in your urine over 24 hours to assess inflammation, often used to monitor treatment response in conditions like infections or autoimmune diseases.
["CRP helps track how well your body’s inflammation is responding to ongoing treatment."]
Key facts at a glance
- LOINC
- 111855-3
- Short code
- Purpose of treatment Endscpy
- Synonyms
- Purpose of treatment Endscpy
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- endoscopy
- 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 healthcare provider may order this test to evaluate whether your ongoing treatment for inflammation or infection is working effectively. It helps determine if the condition is improving or if adjustments to your treatment plan are needed.
What to Expect Before the Test
You’ll collect urine for 24 hours in a special container. Make sure to record the time each urine sample is voided to ensure accurate measurement. Avoid foods or supplements that may affect CRP levels, as instructed by your doctor.
How the Test Works
The collected urine is analyzed to measure CRP, a protein produced by the liver in response to inflammation. This test provides a comprehensive picture of systemic inflammation over a full day.
Possible Results and Next Steps
Results may indicate persistent or reduced inflammation. Your doctor will discuss findings with you and may recommend follow-up tests or treatment adjustments based on the outcome.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
CRP is a marker of inflammation and is often used alongside other tests to guide treatment decisions. Elevated levels may suggest ongoing inflammation, while lower levels may indicate treatment success. This test helps ensure your treatment is effective and adjusts care as needed.
Short name
CRP Urine End-of-Treatment
Frequently asked questions
What does a high CRP level in urine mean?
The frequency depends on your treatment plan. Your healthcare provider will let you know how often this test should be done, typically as part of ongoing monitoring for your condition.
If you miss a sample, contact your healthcare provider immediately to reschedule or adjust the collection period. Missing samples can lead to inaccurate 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