Proteinuria (excess protein in urine) is an important marker of kidney disease.

The PCR test provides a convenient alternative to 24-hour urine protein measurement by using a random urine sample.

Clinical uses include:

Detecting chronic kidney disease (CKD).

Monitoring diabetic nephropathy and hypertensive nephropathy.

Evaluating glomerulonephritis and other renal disorders.

Assessing treatment response in patients with kidney disease.

The test is performed using a random urine sample, making it practical for routine screening.

Analyte: Ratio of urine protein concentration to urine creatinine concentration.

Normal Range: < 0.2 (varies slightly by lab).

Abnormal Findings:

PCR ≥ 0.2: Suggests proteinuria.

PCR ≥ 3.5: Indicates nephrotic-range proteinuria.

Clinical Use:

Provides a reliable estimate of daily protein excretion.

Helps differentiate mild, moderate, and severe kidney damage.

Guides diagnosis, prognosis, and treatment monitoring in renal disease.