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Urine Creatinine - Spot Collection - Creatinine-Urine
Overview & Description
This test measures the amount of creatinine in the urine. Creatinine is produced in the muscles and filtered by the kidneys. The amount of creatinine in the urine is a measure of how well the kidneys are functioning.
Who is a candidate for the test?
This test may be ordered to check a person's intake of fluid or of high protein foods such as meat. It also detects muscle damage or degeneration, nerve damage from diabetes mellitus, or other disorders of the endocrine system. It provides clues about damage or blockages within the kidney, bladder or other parts of the urinary system.
How is the test performed?
Either a 24-hour urine sample or a spot sample may be done.
For a spot sample, the person urinates and collects a small sample in a container. The container is sealed and given to the healthcare provider.
For a 24-hour urine sample, the person should follow the specific instructions of the healthcare provider. In general, this schedule is followed:
Preparation & Expectations
What is involved in preparation for the test?
The person should request specific instructions from the doctor.
Results and Values
What do the test results mean?
The healthy range for creatinine in urine is:
Abnormal creatinine levels may suggest the following:
Attribution
Author:David T. Moran, MD
Date Written:
Editor:Crist, Gayle P., MS, BA
Edit Date:10/16/02
Reviewer:Kathleen A. MacNaughton, RN, BSN
Date Reviewed:10/16/02