Oxalate, Quant, 24-Hour Urine

24-hour urine oxalate measures how much oxalate your body excretes daily. It helps identify risk factors for kidney stone formation, particularly in people with recurrent stones, and can guide dietary modifications (reducing high-oxalate foods like spinach, nuts, and chocolate).

Athletes are at higher risk for kidney stones due to dehydration, high protein intake, and intense training stress. Elevated urinary oxalate combined with low fluid output increases stone risk, making this test useful for active individuals with a personal or family history of stones, or those experiencing flank pain during or after training.