Protein/Creatinine Ratio, 24 Hrs. Urine

Protein/Creatinine Ratio, 24 Hrs. Urine

What it is

The Protein/Creatinine Ratio, 24 Hrs. Urine test measures the amount of protein excreted in urine compared to creatinine levels over a 24-hour collection period. This ratio helps provide an accurate assessment of protein loss, independent of urine concentration. It is an important diagnostic tool for detecting and monitoring kidney disease, especially in patients with diabetes, hypertension, or chronic kidney disorders.

Uses

This test is used to:
– Detect proteinuria (excess protein in urine).
– Monitor kidney function in patients with diabetes, hypertension, or chronic kidney disease (CKD).
– Assess the severity of protein loss and progression of kidney damage.
– Differentiate between temporary proteinuria (e.g., after exercise) and persistent proteinuria.
– Evaluate response to treatment in patients with kidney-related conditions.

Symptoms That May Lead to the Test

Doctors may recommend this test if you have:
– Swelling (edema) in the feet, legs, hands, or around the eyes.
– Frothy or foamy urine.
– High blood pressure.
– Signs of chronic kidney disease or diabetic nephropathy.
– Unexplained abnormal results from routine urine analysis.

Abnormal Results

High Protein/Creatinine Ratio: Indicates significant proteinuria, which may be due to chronic kidney disease, diabetic nephropathy, glomerulonephritis, lupus nephritis, or hypertension-related kidney damage. Persistent elevation suggests progressive kidney dysfunction.

Normal or Low Ratio: Suggests normal kidney function with no significant protein loss.
Abnormal findings usually require follow-up with additional kidney function tests such as serum creatinine, eGFR, or albumin-to-creatinine ratio (ACR).

Risks

The test is non-invasive and involves a 24-hour urine collection. There are no health risks, but accuracy depends on complete and proper urine collection throughout the day.