Urine Osmolality Test
Health Checkups
≈ ¥20-50
(≈ $3-7)
15 min
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Description
Estimated cost for Urine Osmolality Test at general public hospitals in China is about ¥15-40, and at Grade 3A hospitals about ¥20-50, varying by hospital tier and region.
Main Uses
Urine osmolality test is primarily used to assess the concentrating ability of the kidneys, diagnose conditions related to water balance in the body such as diabetes insipidus or SIADH, and evaluate the effectiveness of treatment for these conditions. It is also useful in differentiating between prerenal and intrinsic renal causes of acute kidney injury.
Normal Range
The normal range for urine osmolality is typically between 800 to 1,200 mOsm/kg H2O. This value can vary slightly based on the laboratory and the method of measurement.
Low Values - Possible Causes
Possible causes of low values include: excessive fluid intake or overhydration, diabetes insipidus, renal failure, and certain medications like diuretics.
High Values - Possible Causes
Possible causes of high values include: dehydration, heart failure, liver disease, syndrome of inappropriate antidiuretic hormone secretion (SIADH), and certain kidney diseases.