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      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

    Urine Output and Fluid Balance

    Calculates urine output over a 24-hour period.


    Include volume intake to get a net fluid balance calculation as well (assuming no other fluid losses), for both adult and pediatric patients.

    Calculates urine output rate and fluid balance, comparing with normals, from total urine output and fluid intake.


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    Next Steps
    Creator Insights
    Dr. Saulo Klahr

    About the Creator

    Saulo Klahr, MD, (d. 2010) was formerly the director of the Renal Division at Washington University. He received an award in 1994 from the American Association for the Advancement of Science for his research on the causes of kidney diseases and his leadership in the field of nephrology. His research focused on kidney disease and metabolism and regulatory control of fluids and electrolytes.

    To view Dr. Saulo Klahr's publications, visit PubMed

    Are you Dr. Saulo Klahr? Send us a message to review your photo and bio, and find out how to submit Creator Insights!
    MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients.
    About the Creator
    Dr. Saulo Klahr
    Are you Dr. Saulo Klahr?