Original Article
A multicenter study of reference intervals for 15 laboratory parameters in Chinese children
Zhong Xuhui, Ding Jie, Zhou Jianhua, Yu Zihua, Sun Shuzhen, Bao Ying, Mao Jianhua, Yu Li, Li Zhihui, Han Ziming, Song Hongmei, Jiang Xiaoyun, Liu Yuling, Zhang Bili, Xia Zhengkun, Jin Chunhua, Zhu Guanghua, Wang Mo, Feng Shipin, Shen Ying, Huang Songming, Ma Qingshan, Li Haixia, Wang Xuejing, Ichihara Kiyoshi, Yao Chen, Dong Chongya
Published 2018-11-02
Cite as Chin J Pediatr, 2018, 56(11): 835-845. DOI: 10.3760/cma.j.issn.0578-1310.2018.11.009
Abstract
ObjectiveTo establish comprehensive laboratory reference intervals for Chinese children.
MethodsThis was a cross-sectional multicenter study. From June 2013 to December 2014, eligible healthy children aged from 6-month to 17-year were enrolled from 20 medical centers with informed consent. They were assessed by physical examination, questionnaire survey and abdominal ultrasound for eligibility. Fasting blood samples were collected and delivered to central laboratory. Measurements of 15 clinical laboratory parameters were performed, including estradiol (E2), testosterone(T), luteinizing hormone(LH), follicle-stimulating hormone(FSH), alanine transaminase(ALT), serum creatinine(Scr), cystatin C, immunoglobulin A(IgA), immunoglobulin G(IgG), immunoglobulin M(IgM), complement (C3, C4), alkaline phosphatase(ALP), uric acid(UA) and creatine kinase(CK). Reference intervals were established according to central 95% confidence intervals for reference population, stratified by age and sex.
ResultsIn total, 2 259 children were enrolled. Finally, 1 648 children were eligible for this study, including 830 boys and 818 girls, at a mean age of 7.4 years. Age- and sex- specific reference intervals have been established for the parameters. Reference intervals of sex hormones increased gradually with age. Concentrations of ALT, cystatin C, ALP and CK were higher in children under 2 years old. Serum levels of sex hormones, creatinine, immunoglobin, CK, ALP and urea increased rapidly in adolescence, with significant sex difference. In addition, reference intervals were variable depending on assay methods. Concentrations of ALT detected by reagents with pyridoxal 5'-phosphate(PLP) were higher than those detected by reagents without PLP. Compared with enzymatic method, Jaffe assay always got higher results of serum creatinine, especially in children younger than 9 years old.
ConclusionThis study established age- and sex- specific reference intervals, for 15 clinical laboratory parameters based on defined healthy children.
Key words:
Child; Multicenter study; Reference interval
Contributor Information
Zhong Xuhui
Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
Ding Jie
Zhou Jianhua
Yu Zihua
Sun Shuzhen
Bao Ying
Mao Jianhua
Yu Li
Li Zhihui
Han Ziming
Song Hongmei
Jiang Xiaoyun
Liu Yuling
Zhang Bili
Xia Zhengkun
Jin Chunhua
Zhu Guanghua
Wang Mo
Feng Shipin
Shen Ying
Huang Songming
Ma Qingshan
Li Haixia
Wang Xuejing
Ichihara Kiyoshi
Yao Chen
Dong Chongya