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Urine oxalate (24 hour)

Urine tests · also printed as 24h urine oxalate, 24 hour urinary oxalate, Urinary oxalate, Oxalate (24h urine), Oxalate excretion

Typical UK adult rangebelow 460 umol/24h

Ranges vary between laboratories; the range printed on the report takes precedence.

What this test measures

The total oxalate passed in urine over a day. Oxalate is the main partner of calcium in kidney stones.

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 oxalate such as spinach, rhubarb, nuts and tea
Gut conditions and weight-loss surgery that increase absorption
Very high vitamin C intake
Rare inherited conditions

What commonly pushes it down

A low-oxalate diet with adequate calcium

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.

Written by a UK consultant physician. Typical UK adult reference ranges; your laboratory's own printed range takes precedence.

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This 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.