24-hour urine / request letter

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Your letter

Dear Doctor,

I would like to discuss preventing further kidney stones, and to ask whether a metabolic evaluation would be appropriate for me.

I have had one kidney stone episode.
The composition of my stone or stones has not been analysed, or I was not told the result.
I have never been asked to complete a 24-hour urine collection.
I have not yet started any specific prevention measures.

I would be grateful if we could discuss:

  1. Whether a 24-hour urine collection would be useful in my case, and if so, arranging one.
  2. Whether any stone I pass or have removed in future can be sent for composition analysis.
  3. Whether a referral to a urologist or nephrologist who handles stone prevention would be appropriate.

I understand these decisions are yours to make with me, and I am not asking for any particular test — only for the conversation. Thank you for your time.

[Your name]

This letter asks for a conversation, not for a specific test to be ordered. Whether a 24-hour collection is right for you is a clinical judgement, and it belongs to you and your doctor together.