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Free kidney stone risk calculator for nephrolithiasis prevention screening. Evaluate hydration, sodium load, diet profile, family and personal history, and metabolic/medical contributors in a practical checklist model.
Last updated: April 13, 2026
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Additional risk factors
Risk points: 3
Lower checklist-based kidney stone risk
Few common risk factors are present in this screening model. Risk is not zero and can change with hydration, diet, and medical conditions.
Positive factors
Important
This checklist does not replace stone analysis, 24-hour urine studies, or clinician-guided prevention. Seek urgent care for fever with flank pain, persistent vomiting, or anuria.
Lower fluid intake is one of the strongest modifiable contributors to stone formation.
High sodium and some dietary patterns increase urinary calcium/uric acid burden in susceptible individuals.
Prior stone events, family history, gout, bowel disease, and obesity increase baseline recurrence concern.
Risk points
3
Lower checklist-based kidney stone risk
Stone risk is multifactorial: fluid intake, urine chemistry, genetics, and comorbid disease all interact. This tool is designed for screening and prevention counseling, not definitive prediction of future events. Recurrence prevention typically benefits from individualized plans based on stone composition and metabolic testing.
Share with anyone working on kidney stone prevention.
Suggested hashtags: #KidneyStones #Nephrology #Urology #Health #Calculator