Quick highlights
- Measures total creatinine excretion over 24 hours
- Helps assess completeness of 24-hour urine collections
- Often paired with 24-hour urine protein or other analytes
- No fasting required
- Accuracy depends on collecting every urine sample for 24 hours
- Keep collection container cool as instructed
- Maintain usual diet/hydration unless advised otherwise
- Home pickup may be available after collection (service-area dependent)
- Clear instructions reduce common collection errors
- SEO coverage: 24 hour urine creatinine test, 24h urine collection creatinine, kidney urine test
What’s included
Preparation
- Obtain 24-hour urine container from lab
- Choose a start time; discard first urine and note start time
- Collect all urine for the next 24 hours
- Collect the final urine exactly at end time
- Keep container refrigerated/cool as instructed
- Avoid missing any urine samples
- Return container promptly after collection
- Download report from <a href='/my-account/'>View reports</a>
FAQs
It measures total creatinine excreted in urine over 24 hours.
No.
Discard the first urine at start time, then collect all urine for 24 hours including the final sample at end time.
The result may be inaccurate; inform the lab/clinician if a sample is missed.
It helps validate collection completeness and provides excretion context for other analytes.
Usually no; follow clinician instructions if specific guidance is provided.
Often 2–3 days depending on processing.
Yes in many areas after you complete collection (service-area dependent).
Keep it cool/refrigerated as instructed by the lab.
Very intense exercise can influence values; follow clinician guidance and keep routine stable.
Protein, electrolytes, calcium, uric acid, and others depending on clinical question.
Download from <a href='/my-account/'>View reports</a>.
No; blood creatinine assesses filtration, urine creatinine measures excretion over time.
Discuss with your clinician; interpretation depends on muscle mass, diet, and kidney context.
Notes
Accurate 24-hour collection is essential for validity.
