This test is detects specific gravity of urine by comparing density of the urine to the density of water. The test helps to determine the functioning of kidneys. It is used to diagnose several conditions that impact water content in the urine such as dehydration, heart failure, shock, diabetes insipidus, kidney failure, kidney function, urinary tract infection, low or elevated levels of sodium. You may need this test if you have signs such as feeling weak, nausea, vomiting, lack of appetite, and muscle cramps.
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