Simple test to evaluate the risk of urinary calcium stone formation

A simple test to evaluate the capacity of a urine to crystallize calcium salts is presented. The test is based on the fact that if a non-protected non-renewed surface remains in contact with a urine, sooner or later the contained supersaturated substances crystallize on it. Thus, by using an adequat...

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Published inClinica chimica acta Vol. 263; no. 1; pp. 43 - 55
Main Authors Grases, F, Garcı́a-Ferragut, L, Costa-Bauzá, A, Conte, A, Garcı́a-Raja, A
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 04.07.1997
Subjects
Adult
Aged
Calcium Oxalate - urine
Case-Control Studies
Crystallization
Female
Humans
In Vitro Techniques
Male
Middle Aged
Risk Factors
Sensitivity and Specificity
Urinary Calculi - diagnosis
Urinary Calculi - etiology
Urinary Calculi - urine
Urine - chemistry
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Summary:A simple test to evaluate the capacity of a urine to crystallize calcium salts is presented. The test is based on the fact that if a non-protected non-renewed surface remains in contact with a urine, sooner or later the contained supersaturated substances crystallize on it. Thus, by using an adequate surface, it is possible to derive a period within which a normal urine does not crystallize whereas a lithogenic urine induces the growth of calcium salts. The test was applied to urines of oxalocalcic stone-formers and healthy people and showed an excellent discrimination between clearly abnormal and healthy urines. Semiologic analysis of the data is also included.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0009-8981
1873-3492
DOI:10.1016/S0009-8981(97)06554-6