BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuUrinary castsHyaline casts; Granular casts; Renal tubular epithelial casts; Waxy casts; Casts in the urine; Fatty casts; Red blood cell casts; White blood cell castsUrinary casts are tiny tube-shaped particles that can be found when urine is examined under the microscope during a test called urinalysis.UrinalysisUrinalysis is the physical, chemical, and microscopic examination of urine. It involves a number of tests to detect and measure various compounds th...ImageRead Article Now Book Mark Article Urinary casts may be made up of white blood cells, red blood cells, kidney cells, or substances such as protein or fat. The content of a cast can help tell your health care provider whether your kidney is healthy or abnormal. How the Test is Performed The urine sample you provide may need to be from your first morning urine. The sample needs to be taken to the lab within 1 hour.A clean-catch urine sample is needed. The clean-catch method is used to prevent germs from the penis or vagina from getting into a urine sample. To collect your urine, the provider may give you a special clean-catch kit that contains a cleansing solution and sterile wipes. Follow instructions exactly so that the results are accurate.Clean-catch urine sampleA clean catch is a method of collecting a urine sample to be tested. The clean-catch urine method is used to prevent germs from the penis or vagina ...Read Article Now Book Mark Article How to Prepare for the Test No special preparation is needed. How the Test will Feel The test involves only normal urination. There is no discomfort. Why the Test is Performed Your provider may order this test to see if your kidneys are working properly. It may also be ordered to check for certain conditions, such as: Glomerular disease Glomerular diseaseGlomerulonephritis is a type of kidney disease in which the part of your kidneys that helps filter waste and fluids from the blood is damaged....ImageRead Article Now Book Mark Article Interstitial kidney disease Interstitial kidney diseaseInterstitial nephritis is a kidney disorder in which the spaces between the kidney tubules become swollen (inflamed). This can cause problems with t...ImageRead Article Now Book Mark Article Kidney infections Normal Results The absence of cellular casts is normal. The presence of a few hyaline casts is also normal. What Abnormal Results Mean Abnormal results may include:Fatty casts are seen in people who have lipids in urine. This is most often a complication of nephrotic syndrome. Nephrotic syndromeNephrotic syndrome is a group of symptoms that include protein in the urine, low blood protein levels in the blood, high cholesterol levels, high tri...ImageRead Article Now Book Mark Article Granular casts are a sign of many types of kidney diseases. Red blood cell casts mean there is a microscopic amount of bleeding from the kidney. They are seen in many kidney diseases. Renal tubular epithelial cell casts reflect damage to tubule cells in the kidney. These casts are seen in conditions such as renal tubular necrosis, viral disease (such as cytomegalovirus [CMV] nephritis), and kidney transplant rejection. Renal tubular necrosisAcute tubular necrosis (ATN) is a kidney disorder involving damage to the tubule cells of the kidneys, which can lead to acute kidney failure. The t...ImageRead Article Now Book Mark Article [CMV] nephritisCytomegalovirus (CMV) infection is a disease caused by a type of herpes virus.ImageRead Article Now Book Mark Article Transplant rejectionTransplant rejection is a process in which a transplant recipient's immune system attacks the transplanted organ or tissue.ImageRead Article Now Book Mark Article Waxy casts can be found in people with advanced kidney disease and long-term (chronic) kidney failure. Long-term (chronic) kidney failureChronic kidney disease is the slow loss of kidney function over time. The main job of the kidneys is to remove wastes and excess water from the body...ImageRead Article Now Book Mark Article White blood cell (WBC) casts are common with acute kidney infections and interstitial nephritis. Your provider will tell you more about your results. Risks There are no risks with this test.Open ReferencesReferencesJudd E, Sanders PW, Agarwal A. Diagnosis and clinical evaluation of acute kidney injury. In: Feehally J, Floege J, Tonelli M, Johnson RJ, eds. Comprehensive Clinical Nephrology. 6th ed. Philadelphia, PA: Elsevier; 2019:chap 68.Riley RS, McPherson RA. Basic examination of the urine. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 23rd ed. St Louis, MO: Elsevier; 2017:chap 28.AllVideoImagesTogFemale urinary tract - illustration The female and male urinary tracts are relatively the same except for the length of the urethra.Female urinary tractillustrationMale urinary tract - illustration The male and female urinary tracts are relatively the same except for the length of the urethra.Male urinary tractillustrationFemale urinary tract - illustration The female and male urinary tracts are relatively the same except for the length of the urethra.Female urinary tractillustrationMale urinary tract - illustration The male and female urinary tracts are relatively the same except for the length of the urethra.Male urinary tractillustration Tests for Urinary casts Urinary castsRelated Information Glomerulonephritis(Condition)Interstitial nephritis(Condition)Nephrotic syndrome(Condition)IgA nephropathy(Condition)Lupus nephritis(Condition)Anti-glomerular basement membrane disease(Condition)Acute tubular necrosis(Condition)Transplant rejection(Condition)Chronic kidney disease(Condition)Acute nephritic syndrome(Condition)Systemic lupus erythematosus(In-Depth) Review Date: 7/23/2021 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, 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- © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.