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    Low blood phosphate; Phosphate - low

    Hypophosphatemia is a low level of phosphorus in the blood.


    The following may cause hypophosphatemia, including:

    • Alcoholism
    • Antacids
    • Certain medicines including acetazolamide, foscarnet, imatinib, pentamidine,and sorafenib
    • Fanconi syndrome
    • Starvation
    • Too little vitamin D
    • Overactive parathyroid gland (hyperparathyroidism)


    • Bone pain
    • Confusion
    • Muscle weakness

    Exams and Tests

    The doctor or nurse will examine you.

    The following tests may be done:

    • Kidney function tests
    • Vitamin K blood test

    Exam and testing may show:

    • Anemia due to too many red blood cells being destroyed (hemolytic anemia)
    • Heart muscle damage (cardiomyopathy)


    Treatment depends on the cause.Phosphate can be given by mouth or through a vein (IV).

    Outlook (Prognosis)

    How well you do depends on what iscausing the condition.

    When to Contact a Medical Professional

    Call your health care provider if you have muscle weakness or confusion.


    Yu ASL. Disorders of magnesium and phosphorous. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 121.


          Tests for Hypophosphatemia

            Review Date: 11/6/2012

            Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.

            The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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            St. Luke's Hospital - 232 South Woods Mill Road - Chesterfield, MO 63017 Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
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