Article |

Filtration of Urine for Quantitation of Cells and Casts

Am J Dis Child. 1964;108(1):19-27. doi:10.1001/archpedi.1964.02090010021003.
Text Size: A A A
Published online

Introduction  Urinary sediment has been recognized for a long time as a useful parameter for the evaluation of health and disease. It is the purpose of this communication to describe and evaluate a simple quantitative method of examination which also permits careful and repeated study of the exfoliated cells. The method consists of the filtration of a measured amount of urine through a membrane of known surface area and of pore size such that all formed elements in the specimen are retained on the surface of the membrane. The formed elements are fixed and stained on this filter membrane which subsequently is rendered transparent. The cells and casts are examined by means of a light microscope and counted. The results are expressed as the number of formed elements per milliliter of urine.

Materials and Method  The following are needed: a side arm filter flask, a Pyrex microanalysis filter holder,* gridded


Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
First page PDF preview





Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment


Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.