24-Hour Urine Calcium Interpretation

Interpret 24-hour urine calcium excretion to diagnose hypercalciuria. Normal values: below 250 mg/day in women, below 300 mg/day in men (or less than 4 mg/kg/day). Hypercalciuria is the most common metabolic abnormality in calcium kidney stone formers, present in 30-60% of patients.

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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 urine calcium excretion to diagnose hypercalciuria. Normal values: below 250 mg/day in women, below 300 mg/day in men (or less than 4 mg/kg/day). Hypercalciuria is the most common metabolic abnormality in calcium kidney stone formers, present in 30-60% of patients. Use the 24hr urine calcium result to inform your calculation.

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Frequently Asked Questions