Urine Osmolality Test
Alternate Names : Urine Osmolality
A urine osmolality test measures the osmolality, or concentration of particles, in a person's urine.
It provides information about the body's ability to balance fluids and other substances.
Who is a candidate for the test?
A urine osmolality test is done when fluid balance or kidney problems are suspected.
How is the test performed?
A mid-stream, or clean-catch, urine
sample is required for this test.
First, the entire area around the urethra should be
washed off to prevent contamination of the sample. Then, a person should:
start urinating into the toilet
move the container to catch a sample of urine
take away the container and finish urinating into the toilet
The container should be covered and brought to the healthcare provider or lab for testing.
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