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Urine citrate (24 hour)
Typical UK adult range1.6 mmol/24h and above
What this test measures
The total citrate passed in urine over a day. Citrate helps stop stones forming, so a low value matters in stone clinics.
Why doctors request it
Kidney stone clinics use it to work out why stones are forming.
What commonly pushes it up
- A diet rich in fruit and vegetables
- Alkalising medicines as a class
What commonly pushes it down
- A high-protein or high-salt diet
- Some kidney conditions where acid cannot be excreted
- Gut conditions with fluid loss
Everyday reasons for a value outside the range
- Diet on the collection day changes it
- Collection errors are common
About the sample
Every drop for exactly 24 hours.
Got a report with Urine citrate (24 hour) on it?
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Read my report freeThis is an educational summary of results you uploaded. It is not medical advice, a diagnosis or a treatment plan, and it does not replace the doctor who requested the test. If you are worried, or a result is marked outside range, discuss it with your doctor. Written and reviewed by a UK consultant physician. Reference ranges vary between laboratories.