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Kidney Stones Kidney Stones Basics


Clinical symptoms, laboratory tests, and diagnostic x-ray studies may all be used to diagnose a kidney stone.


Hematuria (blood in the urine), flank pain, and a history of acute onset are particularly suggestive of a kidney stone. Analysis of a urine sample should be performed to look for the presence of blood or stone crystals. Many types of kidney stones can be seen on standard abdominal x-ray. In addition, a radiologic test is typically performed to confirm the presence of a stone and to rule out other conditions, especially if the patient has no previous history of stones. A number of radiologic tests have been used, but computed tomography (CT scan) is now the preferred test.


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