Reference values for reticulocyte haemoglobin equivalent in healthy Chinese children under 5 years and its associations with various blood parameters

Autor: Patrick Ip, Keith Tsz Suen Tung, Chi Chiu So, Yung Tuen Chiu, Hung Kwan So
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: BMJ Paediatrics Open, Vol 8, Iss 1 (2024)
Druh dokumentu: article
ISSN: 2399-9772
DOI: 10.1136/bmjpo-2024-002736
Popis: Background Reticulocyte haemoglobin equivalent (RET-He) is a useful tool for evaluating recent iron usage irrespective of inflammatory status. This study aims to establish a reference for RET-He among Hong Kong healthy children under the age of 5 years and to investigate the association between RET-He and various blood parameters.Methods A total of 946 children aged 2–48 months from July 2019 to December 2022 were recruited in this cross-sectional study. The RET-He and other haematological parameters were measured by the haematology analyser from Sysmex XN-9100/XN-1500. The ferritin test was performed with the electrochemiluminescence immunoassay. Interval 2.5th percentile to 97.5th percentile represented the normal RET-He ranges. Linear multiple regression analysis was performed to examine the relation between RET-He and various blood parameters. Receiver-operating characteristic curve analysis revealed the sensitivity and specificity of RET-He in identifying iron deficiency.Results The RET-He in the study population was approximately normally distributed. The age-specific lower limit of RET-He ranges from 25.81 pg (25–36 months) to 27.15 pg (13–24 months). RET-He was found to be lower in the age group 2–6 months (mean=29.47 pg) and 7–12 months (mean=29.41 pg). Changes in RET-He and haemoglobin in relation to age were observed in both sexes (both p
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