Kidney function tests

Tests performed to investigate kidney disorders. Urinalysis is a simple test in which a urine sample is examined under a microscope for blood cells, pus cells, and casts (cells and mucous material that accumulate in the tubules of the kidneys and pass into the urine). Urine may be tested for substances, such as proteins, that leak into the urine when the kidneys are damaged. Kidney function can be assessed by measuring the concentration in the blood of substances, such as urea and creatinine, that the kidneys normally excrete. Kidney function may also be assessed by kidney imaging techniques.


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