title: [Criteria of usefulness for the standardized x-ray diffractometric urinary calculus analysis. Improvement in the quality of urinary calculus analysis by the establishment of uniform methodological assumptions in urinary calculus analysis laboratories. 1].
abstract: Urolith analysis by X-ray diffraction is centralized and standardized in the GDR. By setting up uniform methodological conditions the quality of analytical results can be markedly improved. The resulting analytical criteria of usefulness - precision, detection limits and correctness - meet the requirements of diagnostic reliability and guarantee therapeutic relevance.
mesh_terms: D005859:Germany, East; D006801:Humans; D007753:Laboratories / Q000592:standards; D011786:Quality Control; D014545:Urinary Calculi / Q000378:metabolism* / Q000503:physiopathology; D014961:X-Ray Diffraction / Q000379:methods / Q000592:standards
vernacular_title: Brauchbarkeitskriterien der standardisierten röntgendiffraktometrischen Harnsteinanalyse. Qualitätsverbesserung von Harnsteinanalysen durch Schaffung einheitlicher methodischer Voraussetzungen in den Harnsteinanalyse-Laboratorien, 1. Teil.