Kidney stone analysis identifies what a passed or removed stone is made of. The result helps guide steps to reduce the chance of another stone. It is different from a scan that shows where stones are.
Stones can contain calcium, uric acid, cystine or other substances. Different types can form for different reasons, so the same diet or medicine is not suitable for every person. The care team uses the composition to help plan prevention.
If the team asks you to collect a passed stone, they may provide a urine strainer. Follow their instructions for keeping the stone in a clean container. Do not add liquid, tissue or tape unless the laboratory specifically instructs you to do so.
Not necessarily. Getting an appropriate amount of calcium from food can help prevent some calcium stones. Ask how the analysis changes your advice about fluids, salt and food rather than cutting out calcium on your own.

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