Osmolality, 24 Hrs Urine
This test measures the osmolality of urine collected over 24 hours to assess kidney function. It helps diagnose disorders related to fluid balance and kidney concentration ability.
Osmolality, 24 Hrs Urine Test in New Delhi Overview
No special preparations needed
- Osmolality, 24 Hrs Urine
- Volume, 24 Hrs Urine
Urine Osmolality is a test that measures the concentration of particles (solutes) in the urine. It's used to evaluate the kidney’s ability to concentrate or dilute urine and helps diagnose various conditions related to water balance, electrolyte imbalance, and kidney function.
What Is Being Measured in Osmolality 24 Hr Urine Test?
Urine osmolality measures the number of osmoles of solute per kilogram of urine (Osm/kg or mOsm/kg). It reflects how concentrated or diluted the urine is.
Why Osmolality 24 Hr Urine Test Done
Doctors may order a urine osmolality test to:
- Evaluate kidney function
- Investigate electrolyte imbalances
- Diagnose hyponatremia (low sodium levels in the blood)
- Assess ADH (antidiuretic hormone) function (e.g., SIADH or diabetes insipidus)
- Monitor fluid balance in conditions like heart failure, liver cirrhosis, or dehydration
Related Conditions
- SIADH (Syndrome of Inappropriate Antidiuretic Hormone)
- Diabetes Insipidus
- Chronic kidney disease
- Dehydration / Overhydration
- Electrolyte disturbances (especially sodium disorders)
Clinical Significance of Urine Osmolality
Urine osmolality is a key diagnostic marker in assessing how well the kidneys concentrate urine and how the body maintains fluid and electrolyte balance, especially sodium. It plays a crucial role in diagnosing and managing renal, endocrine, and fluid/electrolyte disorders.
Test code
3231U24
Specimen vol. and vacutainer information
| Specimen | Vacutainer | Volume |
|---|---|---|
| Urine,24hr | Blue Plastic Urine collecter | 10 ML |
Specimen stability information
Urine,24Hr
Collection instructions
24 hours urine to be collected in clean leak proof container without preservative . Time of collection, start time to end time and exclude first urine sample and include last voided urine sample. Refrigerate sample during collection. Urine sample to be send in cold condition. Provide total volume of 24 hrs collected urine sample, Age, gender, medication & clinical details. Avoid any contamination & send urine sample in specific urine containers only.
Specimen rejection criteria
Test run frequency
Every Day TIME - 12:00
Turn around time
Same Day
Performing locations
Department
- Bio Chemistry
CPT and Loinc codes
Package price
₹1200
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₹1200