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Kidney function tests

 

Kidney function tests are common lab tests used to evaluate how well the kidneys are working. Such tests include:

  • BUN (Blood urea nitrogen)
  • Creatinine - blood
  • Creatinine clearance
  • Creatinine - urine

 

References

Oh MS, Briefel G. Evaluation of renal function, water, electrolytes and acid-base balance. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods . 23rd ed. Philadelphia, PA: Elsevier Saunders; 2017:chap 14.

Pincus MR, Abraham NZ. Interpreting laboratory results. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods . 23rd ed. Philadelphia, PA: Elsevier Saunders; 2017:chap 8.

 
  • Kidney anatomy - illustration

    The kidneys are responsible for removing wastes from the body, regulating electrolyte balance and blood pressure, and stimulating red blood cell production.

    Kidney anatomy

    illustration

  • Kidney - blood and urine flow - illustration

    This is the typical appearance of the blood vessels (vasculature) and urine flow pattern in the kidney. The blood vessels are shown in red and the urine flow pattern in yellow.

    Kidney - blood and urine flow

    illustration

  • Kidney function tests - illustration

    Blood or urine is commonly collected to test for how the kidneys are functioning. Some kidney function tests include: creatine, creatinine-urine, creatine clearance, and BUN test.

    Kidney function tests

    illustration

    • Kidney anatomy - illustration

      The kidneys are responsible for removing wastes from the body, regulating electrolyte balance and blood pressure, and stimulating red blood cell production.

      Kidney anatomy

      illustration

    • Kidney - blood and urine flow - illustration

      This is the typical appearance of the blood vessels (vasculature) and urine flow pattern in the kidney. The blood vessels are shown in red and the urine flow pattern in yellow.

      Kidney - blood and urine flow

      illustration

    • Kidney function tests - illustration

      Blood or urine is commonly collected to test for how the kidneys are functioning. Some kidney function tests include: creatine, creatinine-urine, creatine clearance, and BUN test.

      Kidney function tests

      illustration

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      Review Date: 11/12/2016

      Reviewed By: Jennifer K. Mannheim, ARNP, Medical Staff, Department of Psychiatry and Behavioral Health, Seattle Children's Hospital, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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