Physical & Chemical Examination of Urine

What are the main physical characteristics of urine and why are they important?

The main physical characteristics of urine are color, clarity, odor, volume, and specific gravity. These are important because changes in these features can indicate dehydration, liver problems, infection, or metabolic disorders.

What do chemical tests in urinalysis detect and what do they indicate?

Chemical tests on urine can detect:

• Glucose – may indicate diabetes

• Protein – suggestive of kidney damage or inflammation

• Ketones – seen in diabetes, fasting, or high-fat metabolism

• Blood – may indicate infection, stones, or trauma

• Nitrite – suggests bacterial infection

• Leukocyte esterase – indicates WBCs, often meaning UTI

• pH – reflects acid-base balance

• Specific gravity (via reagent strip) – shows urine concentration

Why are physical and chemical examinations important in urinalysis?

Physical and chemical urine examinations help identify early signs of disease, check kidney function, and detect metabolic or infectious conditions before symptoms appear.

Why are physical and chemical examinations important in urinalysis?

Physical and chemical urine examinations help identify early signs of disease, check kidney function, and detect metabolic or infectious conditions before symptoms appear.