OXALATE, 24-HOUR URINE

What this test checks

Measures oxalate in 24-hour urine. High oxalate is a major cause of the most common type of kidney stones.

Why do people get this test?

Used in recurrent kidney stone work-ups to guide diet changes.

When you should consider this test

• Recurrent kidney stones
• Detailed stone work-up
• Specialist requested

How to prepare

24-hour urine collection. Avoid vitamin C supplements for 24 hours before.