Call CommunityCare at 1-877-321-0022 for more information and rate quotes.
Print-Friendly
Bookmarks

Creatinine urine test

Urine creatinine test

The creatinine urine test measures the amount of creatinine in urine. This test is done to see how well your kidneys are working.

Creatinine can also be measured by a blood test.

How the Test is Performed

After you provide a urine sample, it is tested in the lab. If needed, your doctor may ask you to collect your urine at home over 24 hours. Your health care provider will tell you how to do this. Follow instructions exactly so that the results are accurate.

How to Prepare for the Test

Your health care provider may tell you to temporarily stop taking certain medicines that may affect test results. Be sure to tell your provider about all the medicines you take. These include:

  • Antibiotics such as cefoxitin or trimethoprim
  • Cimetidine

DO NOT stop taking any medicine before talking to your provider.

How the Test will Feel

The test involves only normal urination. There is no discomfort.

Why the Test is Performed

Creatinine is a chemical waste product of creatine. Creatine is a chemical the body makes to supply energy, mainly to muscles.

This test is done to see how well your kidneys work. Creatinine is removed by the body entirely by the kidneys. If kidney function is not normal, creatinine level in your urine decreases.

This test can be used for the following:

  • To evaluate how well the kidneys are working
  • As part of the creatinine clearance test
  • To provide information on other chemicals in the urine, such as albumin or protein

Normal Results

Urine creatinine (24-hour sample) values can range from 500 to 2000 mg/day (4420 to 17680 mmol/day). Results depend on your age and amount of lean body mass.

Another way of expressing the normal range for test results is:

  • 14 to 26 mg per kg of body mass per day for men ( 123.8 to 229.8 µmol/kg/day)
  • 11 to 20 mg per kg of body mass per day for women (97.2 to 176.8 µmol/kg/day)

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.

What Abnormal Results Mean

Abnormal results of urine creatinine may be due to any of the following:

Risks

There are no risks with this test.

References

Chernecky CC, Berger BJ. Creatinine - urine. In: Chernecky CC, Berger BJ, eds. Laboratory Tests and Diagnostic Procedures. 6th ed. St Louis, MO: Elsevier Saunders; 2013:398.

Inker LA, Fan L, Levey AS. Assessment of renal function. In: Johnson RJ, Feehally J, Floege J, eds. Comprehensive Clinical Nephrology. 5th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 3.

Landry DW, Bazari H. Approach to the patient with renal disease. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 114.

BACK TO TOP

    • Female urinary tract

      Female urinary tra...

      Illustration

    • Male urinary tract

      Male urinary tract

      Illustration

    • Creatinine tests

      Creatinine tests

      Illustration

    • Creatinine urine test

      Creatinine urine t...

      Illustration

      • Female urinary tract

        Female urinary tra...

        Illustration

      • Male urinary tract

        Male urinary tract

        Illustration

      • Creatinine tests

        Creatinine tests

        Illustration

      • Creatinine urine test

        Creatinine urine t...

        Illustration

      A Closer Look

       

      Tests for Creatinine urine test

       
       

      Review Date: 7/15/2017

      Reviewed By: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

      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., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
      adam.com

       
       
       

       

       

      A.D.A.M. content is best viewed in IE9 or above, Fire Fox and Google Chrome browser.