Spot urine osmolality is a test used to measure the concentration of particles in urine, which can provide information about the body’s fluid balance and kidney function.
When this test is required
The test may be requested as part of a routine check-up or if a healthcare provider suspects a problem with fluid balance or kidney function.
What the Test Detects
The test measures the concentration of particles in urine, including electrolytes, urea, creatinine, and other solutes. The concentration is reported as osmolality, which is a measure of the number of particles per unit of water.
Preparation for the Test
No special preparation is needed. However, it is important to tell the healthcare provider about any medications, supplements, or medical conditions that may affect the test results.
Sample Requirements
A small amount of urine is needed for the test.
Additional Notes
Spot urine osmolality is just one of many tests that can be used to evaluate fluid balance and kidney function. Your healthcare provider may order other tests depending on your individual medical history and clinical findings.
