PMID: 9445764Jan 31, 1998Paper

External assessment of analytic quality in hematology: a necessity in Latin America

Revista Panamericana De Salud Pública = Pan American Journal of Public Health
N E FinkD Mazziotta

Abstract

The assurance of analytical quality in a clinical laboratory is achieved through an internal system of quality control complemented by an external evaluation program. Quality assurance provides a foundation for the confidence that is placed in laboratory results and their use in the diagnosis and treatment of diseases. Many laboratories in Latin American countries do not have appropriate systems in place to evaluate and control quality. Given the importance of diagnoses based on hematologic data, the Pan American Health Organization sponsored a course in quality control in hematology during the XI Latin American Congress of Clinical Biochemistry (Mexico, 1993), in which representatives from Argentina, Chile, Cuba, Mexico, Paraguay, Dominican Republic, and Uruguay participated. As part of the course, the following control materials were produced: secondary standard solution of cyanmethemoglobin, stabilized concentrated hemoglobin solution, and preserved human whole blood with pseudoleukocytes. These materials were sent to laboratories in the seven participating countries for use in analytical procedures, and the results were then subjected to an external evaluation to assess individual performance and the comparability of result...Continue Reading

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