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中华临床实验室管理电子杂志 ›› 2022, Vol. 10 ›› Issue (04) : 199 -203. doi: 10.3877/cma.j.issn.2095-5820.2022.04.002

实验研究

RDW、MCV、MCH联合筛查区分缺铁性贫血和地中海贫血携带者的应用价值
刘秀丽1, 梁倩文1, 栾艺1, 何川疆1, 胡慧灵1, 段朝晖1,()   
  1. 1. 510120 广东广州,中山大学孙逸仙纪念医院检验科
  • 收稿日期:2022-06-21 出版日期:2022-11-28
  • 通信作者: 段朝晖
  • 基金资助:
    广东省自然科学基金(2020A1515011467)

The application value of combined screening of RDW, MCV and MCH in distinguishing iron deficiency anemia and thalassemia carriers

Xiuli Liu1, Qianwen Liang1, Yi Luan1, Chuanjiang He1, Huiling Hu1, Chaohui Duan1,()   

  1. 1. Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou Guangdong 510120, China
  • Received:2022-06-21 Published:2022-11-28
  • Corresponding author: Chaohui Duan
引用本文:

刘秀丽, 梁倩文, 栾艺, 何川疆, 胡慧灵, 段朝晖. RDW、MCV、MCH联合筛查区分缺铁性贫血和地中海贫血携带者的应用价值[J]. 中华临床实验室管理电子杂志, 2022, 10(04): 199-203.

Xiuli Liu, Qianwen Liang, Yi Luan, Chuanjiang He, Huiling Hu, Chaohui Duan. The application value of combined screening of RDW, MCV and MCH in distinguishing iron deficiency anemia and thalassemia carriers[J]. Chinese Journal of Clinical Laboratory Management(Electronic Edition), 2022, 10(04): 199-203.

目的

探讨红细胞体积分布宽度(RDW)、平均红细胞体积(MCV)、平均红细胞血红蛋白含量(MCH)区分缺铁性贫血(简称IDA)和地中海贫血(简称地贫)携带者的应用价值。

方法

回顾性分析7130例地贫基因检测数据,比较静止型α地贫、轻型α地贫、HbH病、轻型β地贫、中间型β地贫、重型β地贫、IDA和健康对照组的RDW、MCV和MCH。分别以静止型α地贫、轻型α地贫、轻型β地贫为病例组,IDA组为对照组,绘制RDW、MCV、MCH单项指标及多项指标联合(RDW+MCV、MCV+MCH、RDW+MCV+MCH)的ROC曲线。

结果

与健康对照组相比,IDA、α地贫3种表型、β地贫3种表型的MCV、MCH和RDW差异均具有统计学意义(P<0.05)。ROC曲线结果显示,RDW在静止型α地贫与IDA、轻型α地贫与IDA、轻型β地贫与IDA的鉴别中,AUC分别为0.926、0.792和0.730,截断值分别为0.155、0.165和0.175;MCV的AUC分别为0.830、0.705和0.817,截断值分别为77.75、72.45和66.25;MCH的AUC分别为0.881、0.529和0.608,截断值分别为24.85、22.35和21.15;RDW、MCV、MCH三项指标联合的AUC分别为0.930、0.944和0.969。

结论

RDW的鉴别价值高于MCV和MCH;RDW、MCV、MCH三项指标联合筛查在区分IDA和地贫携带者的效能大于单项指标或两项联合。

Objective

To explore the application value of RDW, MCV and MCH in distinguishing patients of iron deficiency anemia (IDA) and thalassemia carriers.

Methods

The results of 7130 cases of thalassemia gene detection were retrospectively analyzed, and the data of RDW, MCV and MCH of α-TT silent carrier, α-TT trait, HbH disease, β-thalassemia minor, β-thalassemia intermediate, β-thalassemia major, iron deficiency anemia and healthy control groups were compared. Taking α-TT silent carrier, α-TT trait and β-thalassemia minor as the case group respectively, and IDA as the control group, the ROC curves of single indexes of RDW, MCV, MCH and the combination of multiple indexes (RDW+MCV, MCV+MCH, RDW+MCV+MCH) were evaluated, respectively.

Results

Compared with the healthy control group, the results of MCV, MCH and RDW between the three phenotypes of α-thalassemia, three phenotypes of β-thalassemia and IDA were significantly different (P<0.05). The analysis of ROC curve showed that the AUC of RDW in the identification of α-TT silent carrier and IDA, α-TT trait and IDA, and β-thalassaemia minor and IDA were 0.926, 0.792 and 0.730, and the cut-off values were 0.155, 0.165 and 0.175, respectively. The AUC of MCV in these three groups were 0.830, 0.705 and 0.817, and the cut-off values were 77.75, 72.45 and 66.25, respectively. The AUC of MCH were 0.881, 0.529 and 0.608, and the cut-off values were 24.85, 22.35 and 21.15, respectively. Combining these three indexes, the corresponding AUC were 0.930, 0.944 and 0.969 respectively.

Conclusions

The discriminative value of RDW is higher than that of MCV and MCH. The combined screening of RDW, MCV, and MCH is more effective in distinguishing IDA patients and thalassemia carriers than a single indicator or a combination of the two.

表1 健康对照组、IDA与α、β地贫各表型分布情况
表2 健康对照组、IDA与α、β地贫各表型的血液学指标比较
图1 静止型α地贫与IDA单项及多项指标联合诊断ROC曲线
图2 轻型α地贫与IDA单项及多项指标联合诊断ROC曲线
图3 轻型β地贫与IDA单项及多项指标联合诊断ROC曲线
表3 RDW、MCV、MCH单项及多项联合指标的ROC曲线结果
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