Review on Physical and Chemical Examination of Urine: Diagnostic Importance

Urine examination is one of the most important, simple, and non-invasive diagnostic tools used in clinical practice. It provides valuable information about renal function, metabolic disorders, infections, systemic diseases, and exposure to environmental contaminants. Because urine collection is easy, painless, and suitable for repeated sampling, it serves as an effective alternative or supplement to blood testing. A complete urinalysis includes physical, chemical, and microscopic examination, each contributing essential diagnostic insights. Advances in analytical techniques have increased the clinical utility of urine biomarkers, allowing early detection and monitoring of various diseases, including diabetes, urinary tract infections, kidney disorders, and malignancies. This review article highlights the significance of urine examination, outlines normal and abnormal findings, discusses various analytical methods, and emphasizes its advantages and clinical importance in disease diagnosis, prognosis, and patient management.