Clinical Chemistry
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Clinical Chemistry 28: 1500-1502, 1982;
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Eckfeldt, J.
Right arrow Articles by Kershaw, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Eckfeldt, J.
Right arrow Articles by Kershaw, M.

Clinical Chemistry, Vol 28, 1500-1502, Copyright © 1982 by American Association for Clinical Chemistry

Urinary urea: are currently available methods adequate for revival of an almost abandoned test?

J Eckfeldt, AS Levine, C Greiner and M Kershaw

Measurement of urinary urea excretion has been suggested as a means of estimating nitrogen balance in hospitalized patients who are malnourished. Because proficiency-testing surveys show gross variations in mean urea as determined by various automated methods and extremely poor precision occasionally, we compared urinary urea measurements and ammonia interference in three widely used methods. The coupled urease/glutamate dehydrogenase method (used in the DuPont aca) showed positive interference from ammonia, as expected; with the diacetylmonoxime (Technicon (12/60) and the urease conductivity (Beckman ASTRA) methods we saw no such interference. Generally, interference by ammonia is less than 10%, but (rarely) it may exceed 25%. However, if urine specimens are properly diluted and potential sources of interference recognized, all three methods appear capable of providing clinically useful data.


The following articles in journals at HighWire Press have cited this article:


Home page
 JPEN J Parenter Enteral NutrHome page
K. A. Boehm, R. A. Helms, and M. C. Storm
Assessing the Validity of Adjusted Urinary Urea Nitrogen as an Estimate of Total Urinary Nitrogen in Three Pediatric Populations
JPEN J Parenter Enteral Nutr, March 1, 1994; 18(2): 172 - 176.
[Abstract] [PDF]

Home page
 JPEN J Parenter Enteral NutrHome page
F. N. Konstantinides, N. N. Konstantinides, J. C. Li, M. E. Myaya, and F. B. Cerra
Urinary Urea Nitrogen: Too Insensitive for Calculating Nitrogen Balance Studies in Surgical Clinical Nutrition
JPEN J Parenter Enteral Nutr, March 1, 1991; 15(2): 189 - 193.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1982 by the American Association for Clinical Chemistry.