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

    Disease

    Select...

    Specialty

    Select...

    Chief Complaint

    Select...

    Organ System

    Select...

    Patent Pending

    Urine Anion Gap

    Detects urine acidosis for evaluation of non-gap metabolic acidosis.
    Favorite
    When to Use
    Why Use
    • The patient with an unexplained non-gap metabolic acidosis.
    • The patient with a mixed metabolic acidosis.
    • Evaluation for suspected RTA.

    This simple urine test can help differentiate the causes of a non-gap metabolic acidosis (HARDUP):

    • Hyperchloremia
    • Acetazolamide, Addison’s disease
    • Renal tubular acidosis
    • Diarrhea, vomiting, ileostomies, fistulae
    • Ureteroenteric fistulae
    • Pancreatoduodenal fistulae
    mEq/L
    mEq/L
    mEq/L

    Result:

    Please fill out required fields.

    Next Steps
    Evidence
    Creator Insights

    Management

    Remember that hyperchloremic fluids can worsen these acidoses; consider fluids with lower chloride concentrations (like LR).

    Dr. Marc Goldstein

    About the Creator

    Marc Goldstein, MD, DSc (hon), FACS is a professor of reproductive medicine and urology at Weill Cornell Medical College of Cornell University. He is also surgeon-in-chief of male reproductive medicine and surgery and the director of the Center for Male Reproductive Medicine and Microsurgery at the New York Presbyterian Hospital Weill Cornell Medical Center. Dr. Goldstein is a senior scientist with the Population Council’s Center for Biomedical Research and has published over 290 journal articles and book chapters.

    To view Dr. Marc Goldstein's publications, visit PubMed