24-Hour Urine Oxalate Interpretation

Interpret 24-hour urinary oxalate excretion. Normal excretion is below 40 mg/day. Hyperoxaluria (above 40 mg/day) significantly increases calcium oxalate stone risk. Mild hyperoxaluria (40-80 mg/day) is often dietary; primary hyperoxaluria causes values above 80-100 mg/day.

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Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How to Use

Enter the values for the scenario you are assessing. Interpret 24-hour urinary oxalate excretion. Normal excretion is below 40 mg/day. Hyperoxaluria (above 40 mg/day) significantly increases calcium oxalate stone risk. Mild hyperoxaluria (40-80 mg/day) is often dietary; primary hyperoxaluria causes values above 80-100 mg/day. Use the 24hr urine oxalate result to inform your calculation.

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