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Kidney stone analysis

Also called: Stone analysis, Calculus analysis

A kidney stone analysis finds out what your stone is made of, which guides how to prevent more.

SampleA kidney stone
Fasting?Usually not needed
Results1 to 2 weeks
Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.

What the test is

Calcium oxalate stones are most common. Uric acid stones may dissolve with treatment.

Why it's done

  • After passing or removing a kidney stone

Getting ready and what happens

  • Strain your urine through the strainer provided and save any stone in a dry container.

How the test is done

  • The stone is sent to a lab.

What the results mean

Stone type

Each type has specific diet and medicine advice. Drinking enough fluid to make about 2.5 liters of urine a day helps prevent most stones.

Questions to ask your provider

  • What do my results mean for me?
  • Do I need to repeat this test or have other tests?

Related conditions

Related medicines

Related tests

Sources

Last updated 2026-11-13.