• Question: What is a kidney stone, and what is it made of?

    Asked by Lalcie to Craig, Marta, Natalie, Nicholas on 15 Mar 2017.
    • Photo: Marta Varela

      Marta Varela answered on 15 Mar 2017:

      Hi Lalcie.

      As far as I know, they are small solid minerals (stones). Wikipedia tells me they are often made of oxalate or urate: https://en.wikipedia.org/wiki/Calculus_(medicine).

      This is very far from my field of expertise so I can’t add much more, sorry. I just know they are extremely painful if they are big and therefore hard to expel.

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