24-Hour Urine Collection
A test where all urine passed in 24 hours is collected to measure protein, creatinine or substances that form stones.
Quick Summary
To measure protein loss, kidney function or stone-forming substances.
Total protein, creatinine, calcium, oxalate, uric acid or others.
You'll get a container; follow instructions about storage and timing.
Overview
Missing any urine makes the result inaccurate.
Often used for kidney stones and protein in urine.
What It Measures
Daily totals
Protein, creatinine and minerals.
How It's Performed
- 01
Start
Empty your bladder in the morning and discard it; note the time.
- 02
Collect
Collect all urine for the next 24 hours.
- 03
Finish
Include the first urine of the next morning and return the container.
Interpreting Results & Next Steps
Discuss with Doctor
Your doctor will explain what your result means and what happens next.
If values are High:
High protein or stone-forming substances guide treatment.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Protein in Urine(opens in a new tab) · MedlinePlus, US National Library of Medicine