CC BY 4.0 · TH Open 2019; 03(04): e367-e376
DOI: 10.1055/s-0039-3401002
Original Article
Georg Thieme Verlag KG Stuttgart · New York

Breakfast can Affect Routine Hematology and Coagulation Laboratory Testing: An Evaluation on Behalf of COLABIOCLI WG-PRE-LATAM

Maria Elena Arredondo*
1   BIONET S.A., Santiago, Chile
,
Eduardo Aranda*
2   Laboratory of Thrombosis and Hemostasis, Department of Hematology-Oncology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
,
Rubén Astorga
1   BIONET S.A., Santiago, Chile
,
Lorena Michele Brennan-Bourdon*
3   Clinical Laboratory Network from the State of Jalisco, Public Health State Laboratory (LESP), Comisión Para la Protección Contra Riesgos Sanitarios del Estado de Jalisco (COPRISJAL), Guadalajara, Mexico
,
Marise Danielle Campelo
4   Clinical Laboratory Bioanalise, Teresina, Piaui, Brazil
,
Silvia Flores*
5   Universidad Peruana Cayetano Heredia, Lima, Perú
,
Claudio Medel
1   BIONET S.A., Santiago, Chile
,
Ignacio Manríquez
6   Clínica Dávila y Servicios Médicos S.A., Santiago, Chile
,
Patricia Ochoa*
7   Facultad de Medicina, Universidad Católica de Cuenca, Cuenca, Ecuador
,
Beatriz Varela*
8   LAC, Montevideo, Uruguay
,
Carlos Vega Salinas
6   Clínica Dávila y Servicios Médicos S.A., Santiago, Chile
,
9   Section of Clinical Biochemistry, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
› Author Affiliations
Funding None declared.
Further Information

Publication History

30 August 2019

25 October 2019

Publication Date:
17 December 2019 (online)

Abstract

Laboratories worldwide perform both hematological and coagulation testing on patients avoiding fasting time. In 2017, the Latin America Confederation of Clinical Biochemistry (COLABIOCLI) commissioned the Latin American Working Group for Preanalytical Phase (WG-PRE-LATAM) to study preanalytical variability and establish guidelines for preanalytical procedures to be applied by clinical laboratories and health care professionals. This study, on behalf of COLABIOCLI WG-PRE-LATAM, aims to evaluate the effect of the breakfast on routine hematology and coagulation laboratory testing. We studied 20 healthy volunteers who consumed a breakfast containing a standardized amount of carbohydrates, proteins, and lipids. We collected blood specimens for routine hematology and coagulation laboratory testing before breakfast and 1, 2, and 4 hours thereafter. Significant differences between samples were assessed by the Wilcoxon ranked-pairs test. Statistically significant differences (p < 0.05) between basal and 4 hours after the breakfast were observed for red blood cells, hemoglobin, hematocrit, mean corpuscular volume, white blood cells, neutrophils, lymphocytes, monocytes, mean platelet volume, and activated partial thromboplastin time. In conclusion, the significant variations observed in several hematological parameters, and activated partial thromboplastin time due to breakfast feeding demonstrate that the fasting time needs to be carefully considered prior to performing routine hematological and coagulation testing to avoid interpretive mistakes of test results, and to guarantee patient safety. Therefore, COLABIOCLI WG-PRE-LATAM encourages laboratory quality managers to standardize the fasting requirements in their laboratory, i.e., 12 hours.

* Latin American Working Group for Preanalytical Phase (WG-PRE-LATAM) of the Latin America Confederation of Clinical Biochemistry (COLABIOCLI), Montevideo, Uruguay.


 
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