Laboratory Medicine ›› 2021, Vol. 36 ›› Issue (1): 48-52.DOI: 10.3969/j.issn.1673-8640.2021.01.010

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Correlation between some laboratory indexes and severity of COVID-19 in 144 patients

LIAO Shengjun, XU Xianqun, ZHAO Jin, LI Siwei, QIU Xueping, CHEN Liangjun, LI Yirong()   

  1. Department of Clinical Laboratory,Zhongnan Hospital of Wuhan University,Wuhan 430071,Hubei,China
  • Received:2020-03-25 Online:2021-01-30 Published:2021-02-05

Abstract:

Objective To study the correlation between some laboratory indexes and severity of corona virus disease 2019(COVID-19). Methods The results of laboratory examination of 144 patients with COVID-19 confirmed in Zhongnan Hospital of Wuhan University from January 20,2020 to March 10,2020 were collected and analyzed retrospectively. The blood routine examination,D-dimer(DD),C-reactive protein(CRP),procalcitonin(PCT),serum amyloid A protein(SAA),cytokines and lymphocyte subgroups were compared between common and severe COVID-19 patients. Logistic regression was used to analyze the relationship between laboratory indexes and COVID-19 severity. Results Severe patients had higher levels of white blood cell(WBC) count,neutrophil percentage (NEUT%),neutrophil/lymphocyte ratio(NLR),SAA,CRP,PCT,DD,interleukin(IL)-6 and IL-10 than commonpatients(P<0.05). Lymphocyte percentage(LYMPH%) was significantly lower in severe group than that in common group(P<0.05). There was no significant difference in mean corpuscular volume(MCV),red blood cell volume distribution width(RDW),hemoglobin(Hb),platelet(PLT) count,tumor necrosis factor alpha(TNF-α),IL-2 or IL-4 between the two groups(P>0.05). The total lymphocyte number was significantly lower in severe group than that in common group(P<0.05),but no significant difference was found in the lymphocyte constituent ratio between the two groups(P>0.05). Logistic regression analysis showed that WBC count,NEUT%,NLR,SAA,DD,CRP,IL-6 and IL-10 could be used as laboratory indexes to reflect the severity of COVID-19(P<0.05). Conclusion WBC count,NEUT%,NLR,SAA,DD,CRP,IL-6 and IL-10 in severe COVID-19 patients have obvious changes as compared with those in common patients. The changes of these laboratory indexes are helpful for the early diagnosis of COVID-19.

Key words: Corona virus disease 2019, Servere acute respiratory syndromecoronavirus 2, Laboratory index

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