Urine Osmolality – 24 Hour Urine Test ₹450
Measures the concentration of dissolved particles in urine over a 24-hour collection period. Helps evaluate the kidney’s ability to concentrate or dilute urine and assess fluid and electrolyte balance.
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What is the 24 Hour Urine Osmolality Test?
The Urine Osmolality test measures the concentration of dissolved substances such as salts, electrolytes, and waste products in urine. When measured over a 24-hour urine collection, it provides insight into how well the kidneys regulate water balance and urine concentration. This test helps evaluate disorders related to kidney function, hydration status, and hormonal control of fluid balance.
Who should take this test?
- Patients with suspected kidney function problems.
- People with abnormal fluid balance or dehydration.
- Individuals with symptoms of excessive thirst or urination.
- Evaluation of conditions such as diabetes insipidus.
- Doctor-advised investigation of electrolyte imbalance.
Preparation & Test Process
2) Collect all urine passed during the next 24 hours.
3) On Day 2, include the first morning urine to complete the collection.
4) Return the container to the laboratory as instructed.
How to interpret results
Results are reported as urine osmolality (mOsm/kg), indicating the
concentration of dissolved particles in urine.
High osmolality may indicate dehydration, increased solute concentration, or certain hormonal conditions.
Low osmolality may suggest excessive fluid intake or impaired kidney concentrating ability.
Interpretation should be done by your doctor in combination with other
kidney and electrolyte tests.
FAQs – 24 Hour Urine Osmolality Test
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