Kidney & Urinary Diseases
The kidneys play an essential role in removing waste products, maintaining fluid and electrolyte balance, regulating blood pressure, and supporting bone and mineral health. Kidney and urinary tract disorders can develop gradually and may remain unnoticed until significant disease has occurred.
Laboratory testing helps evaluate kidney function, detect early kidney damage, identify urinary tract infections, assess protein loss in urine, and monitor chronic kidney disease and its complications. At National Path Lab (NPL), biochemical, urine, hematological, hormonal, and specialized investigations can support the evaluation and monitoring of kidney and urinary diseases.
Conditions (5)
About Kidney & Urinary Diseases
Conditions Covered on This Page
• Chronic Kidney Disease (CKD)
• Diabetic Kidney Disease
• Proteinuria
• Nephrotic Syndrome
• Urinary Tract Infection (UTI)
Urine ACR: A Key Kidney Health Test
Urine Albumin-to-Creatinine Ratio (ACR) is an important laboratory test for detecting albumin leakage into urine. It has particular relevance in diabetes, hypertension, chronic kidney disease, cardiovascular risk assessment, and suspected glomerular disease. Because of its central role across multiple conditions in this department, understanding this single test helps clarify why it recurs throughout the following pages.
Why Are Multiple Kidney Tests Sometimes Needed?
Kidney disease can affect filtration, urine composition, electrolytes, blood counts, and mineral metabolism. Therefore, a combination of tests often provides a more complete assessment than any single value. For example, chronic kidney disease evaluation combines creatinine, eGFR, urine ACR, and urinalysis — these tests provide complementary information about kidney filtration and kidney damage that no single test can offer alone.
Your doctor may select the appropriate combination based on symptoms, medical history, medications, previous reports, and suspected diagnosis.
Do Kidney & Urinary Tests Require Fasting?
Most routine kidney and urine tests do not require fasting. Creatinine/eGFR, urine ACR, urinalysis, urine culture, urea, and electrolytes usually do not require fasting. Lipid profile may require fasting in selected situations. Follow the specific sample-collection and preparation instructions provided by your doctor or NPL.
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