Compare this test’s laboratory options
Creatinine, 24-Hour Urine
Quest Diagnostics1 test optionFrom $8.76
Creatinine, 24-Hour Urine
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsCreatinine, 24-Hour Urine – This test measures the amount of creatinine expelled in the urine over a 24-hour period and is used to evaluate kidney function. This test helps determine how well the kidneys are able to filter small molecules like creatinine out of the blood. It is often used in conjunction with blood creatinine tests to calculate the creatinine clearance rate, which can provide more detailed information on kidney filtration efficiency. This is particularly useful in detecting renal dysfunction and monitoring known kidney disease or conditions affecting kidney performance.
Who might need this test?This test is often recommended to monitor kidney function.
What type of sample is required?A 24-hour urine collection. You'll need to collect all the urine you produce in a 24-hour period in a special container provided by your Provider or the lab. No preservatives are needed for this sample.
Test ResourcesFor more information, please consult your healthcare provider.
Additional test information
Creatinine, 24-Hour Urine – This test measures the amount of creatinine expelled in the urine over a 24-hour period and is used to evaluate kidney function. This test helps determine how well the kidneys are able to filter small molecules like creatinine out of the blood. It is often used in conjunction with blood creatinine tests to calculate the creatinine clearance rate, which can provide more detailed information on kidney filtration efficiency. This is particularly useful in detecting renal dysfunction and monitoring known kidney disease or conditions affecting kidney performance.
Collection and processing
- Sample type: Urine
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Urine. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsCreatinine, 24-Hour Urine - This test measures the amount of creatinine expelled in the urine over a 24-hour period and is used to evaluate kidney function. This test helps determine how well the kidneys are able to filter small molecules like creatinine out of the blood. It is often used in conjunction with blood creatinine tests to calculate the creatinine clearance rate, which can provide more detailed information on kidney filtration efficiency. This is particularly useful in detecting renal dysfunction and monitoring known kidney disease or conditions affecting kidney performance.
Who might need this test?This test is often recommended to monitor kidney function.
What type of sample is required?A 24-hour urine collection. You'll need to collect all the urine you produce in a 24-hour period in a special container provided by your Provider or the lab. No preservatives are needed for this sample.
Test ResourcesFor more information, please consult your healthcare provider.
Additional details
Creatinine, 24-Hour Urine - This test measures the amount of creatinine expelled in the urine over a 24-hour period and is used to evaluate kidney function. This test helps determine how well the kidneys are able to filter small molecules like creatinine out of the blood. It is often used in conjunction with blood creatinine tests to calculate the creatinine clearance rate, which can provide more detailed information on kidney filtration efficiency. This is particularly useful in detecting renal dysfunction and monitoring known kidney disease or conditions affecting kidney performance.
Highlighted health areas
- Kidney
- Urinalysis
- Metabolic function
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Creatinine, 24-Hour Urine