Urine protein/creatinine ratio is a widely used initial method to estimate daily protein excretion in urine.[1][2][3] Since the diagnosis and management of proteinuric renal diseases and the staging of chronic kidney disease depend on accurate identification and quantitation of proteinuria,[4][1] the implementation of the 24-hour urine collection is the most accurate procedure in practice to figure out the urinary protein excretion.[1] However, in current clinical practice, the urine protein/creatinine ratio is widely used to estimate daily protein excretion by virtue of its convenience and simplicity.[5][1]
The difference between urine protein/creatinine ratio and 24-hour urine collection is that the former requires a urine sample to be collected only once at any time.[6] [Creatinine(U)] is taken into account due to the notion that creatinine is normally released into the urine at a constant rate.[6] Scientists found that the ratio of protein to creatinine roughly estimates the actual value gained from the 24-hour urine protein test.[6] The normal urine protein/creatinine ratio is less than 200 mg/g.[7]
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Components and results of urine tests
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| Components |
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| Chemical properties |
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| Abnormal findings |
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