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You are here : AllRefer.com > Health > Tests & Exams > Urinary casts

Urinary casts

Alternate Names : Hyaline casts, Granular casts, Renal tubular epithelial casts, Waxy casts, Casts in the urine, Fatty casts, Red blood cell casts, White blood cell casts

Definition

Urinary casts are tiny tube-shaped particles made up of white blood cells, red blood cells, or kidney cells. They form in kidney structures called tubules. Casts are held together by a protein released by the kidney. The content of a cast can tell your health care provider whether your urine is healthy or abnormal.

Types of urinary casts include:

  • Fatty casts
  • Granular casts
  • Hyaline casts
  • Red blood cell casts
  • Renal tubular epithelial casts
  • Waxy casts
  • White blood cell casts

Why is the Test Performed?

Your doctor may order this test to see if your kidneys are working properly and to check for certain conditions such as kidney infections, glomerular disease, and interstitial kidney disease.

How is the Test Performed?

A clean-catch (midstream) urine sample is needed, preferably the first morning urine sample. For information on how to collect this sample, see: Clean-catch urine culture

How to Prepare for the Test?

No special preparation is needed.

How will the Test Feel?

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

Pictures & Images

Male urinary system
Male urinary system

       
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Review Date : 8/7/2009
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, Medical Director, A.D.A.M., Inc.

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