The Urine Protein-Creatinine Ratio (UPCR) is a test used to measure the amount of protein in the urine, adjusted for creatinine levels. This ratio helps assess kidney function by detecting proteinuria, which can be an early sign of kidney damage. Elevated protein levels in the urine can indicate conditions such as kidney disease, diabetes, hypertension, or glomerulonephritis. The UPCR is often used as a screening tool or to monitor the progression of kidney-related conditions. A higher ratio suggests more significant kidney damage or dysfunction.