Controllab professionals are part of the team of SBPC/ML book authors on pre-analytic factors in lab tests

Controllab participated in the preparation of the book that the Brazilian Society of Clinical Pathology/Laboratory Medicine (SBPC/ML) will launch during its annual congress in September. The publication, which provides recommendations on pre-analytic and interfering factors in lab trials, will be distributed free of charge.

In the book, Controllab professionals wrote the chapter on errors in quality controls during the pre-analytic phase, a very unexplored subject, as reported Rafael Monsores Lopes, Controllab's Proficiency Testing and Internal Controls Advisory Committee for the Laboratory Indicators Program SBPC/ML - Controllab.

"We research texts that addressed the pre-analytic errors for quality controls, but we did not find", he recalls, who divides the authorship of the chapter with Luiza Bottino Grangeiro Balli, Master in Chemistry by UFRJ and Supervisor of the Service Management of Controllab; and Lívia de Oliveira Soares, specialist in Quality, Safety, Environment and Health and Supervisor of the Service Management of Controllab.

"Literatures explain good practices so that errors are minimized, but controlling and identifying their impact in the end is more difficult," says Rafael, adding that this phase refers to an internal lab process, to which the control provider has no access.

Livia Soares says that she faced a great challenge. To address the subject, the authors of the chapter did research with the customer service sector, where Controllab professionals help participating laboratories identify factors responsible for their inadequacies. "We have identified the types of pre-analytic errors that led to changes in the results of quality controls and masked their analytical performance."

The lab are increasingly using Controllab's management tool, the CI ONLINE, to monitor Internal Control and this has helped the authors of the book to write this chapter. "We now have a broader view of the analytical routine and how the laboratory conducts monitoring of the errors that are inherent in the process," she says.

Luiz Balli reminds that Controllab professionals always alert customers to the importance of control material, for example, to have the least possible external interference, so that the result reflects the analytical reality of the laboratory. "Therefore, the correct handling is fundamental so that any change in results is related to the laboratory routine and not to a handling interference that modifies the characteristics of the control material", he teaches.

According to her, a common problem is the aliquoting of the control material. "The lab, to maximize its time of use of the control, accomplishes this process without some necessary validations to determine homogeneity and stability to each of the analytes that make up the control material. The error in this process can influence the results of its quality control and indicate a false error in the analytical process of the lab", explains.

The book was coordinated by members of SBPC/ML, a group formed by Nairo Sumita, Adagmar Andriolo, Wilson Shcolnik, Gustavo Aguiar Campana, Fábio Vasconcellos Brazão, Carlos Alberto Mayora Aita, Guilherme Ferreira de Oliveira, Carlos Eduardo dos Santos Ferreira and Maria Elizabete Mendes. The publication is supported by Abbott, BD, Controllab, Hemocue, Radiometer, Roche, Shift, Softeasy, Sysmex and TM Informática.

The copies will be distributed in the afternoon during the scientific program of September 26 and 27, in the SBPC/ML Space, in the area of the technical scientific exhibition.

Access the book "Recommendations of Brazilian Society of Clinical Pathology/Laboratory Medicine (SBPC/ML): pre-analytic and interfering factors in lab trials"