Pre-analytical phase and causes of variations in the results of hematological laboratory exams: a literature review
Karla Michelle do Carmo Cavalcanti Sousa, Joana Bulhões Alvares da Silva Lima, Juliana Costa de Oliveira, Kesia Caroline Avelino, Letícia Andressa de Souza Moura, Maria Vitória Lins da Silva, Renata Salete da Silva, Valdemir José da Silva Barros Filho, Wilgner Antonio de Melo Silva, Bruna Thaysa de Lima Tavares, Suzankelly de Oliveira Silva · IJS - International Journal of Sciences · 2022
Laboratory diagnosis has undergone several changes over time due to automation.In addition to automation, the adoption of a quality assurance program (PGQ), thus resulting in greater accuracy and accuracy in exams.The present study aimed to analyze in the literature the main laboratory errors related to the pre-analytical phase.The same is a literature review, where data collection was composed of scientific articles taken from electronic databases of scientific publications: SciELO, CAPES Journal Portal and MEDLINE, and data analyses were performed between July and August 2021.The main question of the present study was: "What are the main laboratory errors of the pre-analytical phase found in scientific publications?".The search in the database was performed using the combination of the following keywords: Laboratory tests; pre-analytical phase; Laboratory hematology.In view of the findings in the studies, it was possible to notice that pre-analytical variables continue to be an important source of attention for the clinical laboratory.And that it is responsible for most of the errors that occur in the dynamic process of the clinical analysis laboratory, which negatively impacts the laboratory result of the patient.