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    Urine 24-hour volume

    Urine volume; 24-hour urine collection; Urine protein - 24 hour

    The urine 24-hour volume test measures the amount of urine produced in a day. The amount of creatinine, protein, and other chemicals released into the urine during this period is often tested.

    For this test, you must urinate into a special bag or container every time you use the bathroom for 24-hour period.

    • On day 1, urinate over the toilet into the container or bag when you wake up in the morning. Close the container tightly. Keep it in the refrigerator or a cool place during the collection period.
    • Urinate into the special container every time you use the bathroom for the next 24 hours.
    • On day 2, urinate into the container in the morning again when you wake up.
    • Label the container with your name, the date, the time of completion, and return it as instructed.

    For an infant:

    Thoroughly wash the area around the urethra (the hole where urine flows out). Open a urine collection bag (a plastic bag with an adhesive paper on one end).

    • For males, place the entire penis in the bag and attach the adhesive to the skin.
    • For females, place the bag over the two folds of skin on either side of the vagina (labia). Put a diaper on the baby (over the bag).

    Check the infant often, and change the bag after the infant has urinated. Empty the urine from the bag into the container provided by your doctor.

    An active infant can cause the bag to move, so it may take more than one try to collect the sample.

    When finished, label the container and return it as instructed.

    Certain drugs can also affect the test results. Your health care provider may tell you to stop taking certain medicines before the test. Never stop taking medicine without first talking to your doctor.

    The following may also affect test results:

    • Dehydration
    • Any type of x-ray exam with dye (contrast material) within 3 days before the urine test
    • Fluid from the vagina that gets into the urine
    • Emotional stress
    • Heavy exercise
    • Urinary tract infection

    The test involves only normal urination, and there is no discomfort.

    Your doctor may order this test if there are signs of damage to your kidney function on blood, urine, or imaging tests.

    Urine volume is normally measured as a part of test that measures the amount of a substances passed in your urine in a day, such as:

    • Creatinine
    • Sodium
    • Potassium
    • Nitrogen
    • Protein

    This test may also be done if you have polyuria (abnormally large volumes of urine), such as is seen in diabetes insipidus.

    The normal range for 24-hour urine volume is 800 to 2000 milliliters per day (with a normal fluid intake of about 2 liters per day).

    The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.

    Disorders that cause reduced urine volume include dehydration, not enough fluid intake, or some types of chronic kidney disease.

    Some of the conditions that cause increased urine volume include:

    • Diabetes insipidus - renal
    • Diabetes insipidus - central
    • Diabetes
    • High fluid intake
    • Some forms of kidney disease
    • Use of diuretic medications

    References

    Israni AK, Kasiske BL. Laboratory assessment of kidney disease: glomerular filtration rate, urinalysis, and proteinuria. In: Teal MW, Chertow GM, Marsden PA, Skorecki K, Yu ASL, Brenner BM, eds. Brenner & Rector's The Kidney. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 25.

    Landry DW, Bazari H. Approach to the patient with renal disease. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 116.

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    • Urine sample

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    • Female urinary tract

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    • Male urinary tract

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      • Urine sample

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      • Female urinary tract

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      • Male urinary tract

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            Tests for Urine 24-hour volume

            Review Date: 10/23/2013

            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 David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.

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