Reference intervals of automated reticulocyte count and immature reticulocyte fraction in a pediatric population.
Int J Lab Hematol
; 44(3): 461-467, 2022 Jun.
Article
em En
| MEDLINE
| ID: mdl-34859588
INTRODUCTION: Reticulocytes are erythroid precursors that develop into mature erythrocytes, and they are an important tool to assess erythropoietic activity, as their count indicates the balance between the cells released from the bone marrow, their stage of maturity, and their rate of development into mature erythrocytes. Considering the described biological variability of the absolute reticulocyte count (ARC) and the immature reticulocyte fraction (IRF) and the limited information available on these hematological parameters in children, this study determined the reference intervals (RIs) of these parameters in a healthy pediatric population. METHODS: A retrospective, observational, and analytical study was designed to establish RIs for the ARC and the IRF according to age and sex. An indirect sampling method was applied to a mixed database of complete blood counts from children aged 2 months to 18 years, using the truncated maximum likelihood indirect method for reference interval estimation. Percentiles were calculated to obtain bimodal RIs. RESULTS: From a total of 190,812 samples, 6,814 were selected. Gender stratification was not necessary for the ARC and the IRF but they required partitioning into six and two age groups, respectively. CONCLUSION: This study determined, by an indirect sampling method, RIs for the ARC and the IRF in a pediatric population according to age and sex.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Reticulócitos
Tipo de estudo:
Observational_studies
Limite:
Child
/
Humans
Idioma:
En
Revista:
Int J Lab Hematol
Assunto da revista:
HEMATOLOGIA
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Chile
País de publicação:
Reino Unido