Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
    • Disease is diagnosed: prognosticate to guide treatmentPrognosis
    • Numerical inputs and outputsFormula
    • Med treatment and moreTreatment
    • Suggested protocolsAlgorithm





    Chief Complaint


    Organ System


    Patent Pending

    STONE Nephrolithometry Score for Renal Calculi

    Predicts recurrence of kidney stone based on radiological criteria.
    When to Use
    Why Use

    The patient with renal -- not ureteral -- stones.

    Patients with renal stones can be difficult to assess and prognosticate.


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    Next Steps
    Creator Insights


    Patients with low likelihoods of being stone-free can have their expectations managed pre-operatively, understanding that they may require additional interventions later.

    Dr. Zeph Okeke

    About the Creator

    Zeph Okeke, MD, is a practicing urologic surgeon, specializing in endourology, minimally invasive surgery and laparoscopy, at North Shore-LIJ Medical Group. He is also an assistant professor at Hofstra North Shore-LIJ School of Medicine and co-director of the Smith Institute for Urology endourology and laparoscopy fellowship training programs. Dr. Okeke's research interests include surgical outcomes of kidney stone patients and grading, and characterizing complex kidney stones to guide surgery.

    To view Dr. Zeph Okeke's publications, visit PubMed