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General urine analysis: what it shows, norms and significance for diagnosis
General urine analysis (ZAS) is a basic laboratory test that is widely used in medical practice. The ease of collecting material, the speed of execution and the high informativeness make it indispensable both in preventive medicine and in case of suspicion of various pathologies. According to WHO, it is ZAS that is most often included in the list of mandatory examinations during hospitalization or routine examinations.
Why is a complete urinalysis important?
Urine is the end product of metabolism and at the same time a reflection of the functioning of the kidneys, liver, pancreas and endocrine system. Any changes in the composition of urine can be the first signals of diseases, even when symptoms are not yet present. That is why ZAS is prescribed:
to assess general health;
as part of preventive examinations;
to control the course of chronic diseases;
if urinary tract infections are suspected;
during pregnancy to detect complications.
Basic parameters of general urine analysis
Physical properties: color, transparency, odor, specific gravity, pH.
Biochemical indicators: protein, glucose, ketone bodies, bilirubin, urobilinogen.
Sediment microscopy: leukocytes, erythrocytes, epithelial cells, bacteria, salt crystals.
Each of these indicators can signal specific diseases. For example, the presence of glucose indicates diabetes, protein indicates kidney pathology, and erythrocytes indicate stones or tumors in the urinary tract.
General urine analysis standards and possible deviations
| Indicator | Norm | Possible deviations |
|---|---|---|
| Color | Straw yellow | Dark brown (hepatitis), red (hematuria), colorless (polyuria) |
| Transparency | Transparent | Turbid (bacteria, salts) |
| Specific gravity | 1.010–1.025 | Decreased (renal failure), increased (dehydration, diabetes) |
| pH | 4.5–7.5 | Acidic (gout), alkaline (infections) |
| White | Missing | Proteinuria in glomerulonephritis, nephropathy |
| Glucose | Missing | Diabetes, endocrine disorders |
| Ketone bodies | Missing | Ketoacidosis, starvation |
| Leukocytes | 0–5 in the field of vision | Cystitis, pyelonephritis |
| Erythrocytes | 0–2 in the field of view | Stones, tumors, injuries |
| Epithelium | Single cells | Inflammatory processes |
How to properly prepare for the analysis
To ensure reliable results, several rules must be followed:
Collect morning urine because it is the most concentrated.
Use a sterile container.
Before collecting, perform a thorough toilet of the genitals.
Collect a medium portion of urine.
On the eve, avoid drinking alcohol, large amounts of coffee, and foods that change the color of urine (beets, carrots).
Do not take the test during menstruation.
What a complete urine test can reveal
Urinary tract infections (cystitis, urethritis, pyelonephritis).
Urolithiasis.
Kidney disease (glomerulonephritis, nephrotic syndrome).
Endocrine disorders, including diabetes.
Liver and pancreas pathologies.
Pregnancy complications, such as gestosis.
Why it is worth taking the ZAS regularly
Regularly passing a general urine test allows you to detect pathologies at an early stage. In many cases, this test is the key to timely diagnosis and prevention of serious diseases. Given its availability and simplicity, doctors recommend doing it at least once a year during a preventive examination.
A general urine test is a simple but very important tool in medicine. It allows you to "see" hidden problems and give the doctor valuable clues for further diagnosis. Following the rules of preparation and regularity in passing this test helps to maintain the health of the kidneys and the whole body.
