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Objective: To investigate the distribution of Ret-He and RBC in thalassemia and the value of combining HbA2 in the detection of thalassemia among patients with microcytic or hypochromic.
Methods: 145 patients with microcytic or hypochromic outpatient or hospitalization in our hospital from May 2018 to December 2019 were selected and were divided into the thalassemia group(68 cases) and the non-thalassemia group (77 cases), and at the same time, the patients were divided into four groups of the non-anemia, mild anemia, moderate anemia and severe anemia group according to the degree of anemia. The Ret-He, RBC, RDW-CV and HbA2 in patients were detected, and the distribution of these parameters were compared, and the joint detection of Ret-He, RBC and HbA2 about its sensitivity, specific and other indicators of auxiliary diagnosis of thalassemia were analyzed.
Results: Among patients with microcytic or hypochromic, according to the anemia grade Ret-He gradually decreased from the non-anemia group to the severe anemia group (P<0.05); while RDW-CV was increased gradually from the mild anemia group to the severe anemia group (P<0.05); both RBC and Ret-He were increased in the thalassemia group as compared with the non- thalassemia group (P<0.05); while RDW-CV was decreased in the thalassemia group as compared with the non-thalassemia group (P<0.05); meanwhile Ret-He in the α-thalassemia group was higher than that in the β-thalassemia group. ROC curve analysis showed that combined with HbA2, the specificity was 93.51%, the sensitivity was 66.18%, the positive predictive value was 90% and the negative predictive value was 75.189% when Ret-He was truncated with 19.25 pg and RBC was truncated with 4.95×10/L.
Conclusion: Among patients with microcytic or hypochromic, the distribution of RBC, Ret-He and RDW-CV was different in the thalassemia group and the non-thalassemia group, and was also affected by the degree of anemia. Combined Ret-He and RBC could improve the diagnostic specificity for thalassemia, which were screened by HbA2 in patients with microcytic or hypochromic.
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| http://dx.doi.org/10.19746/j.cnki.issn.1009-2137.2021.01.032 | DOI Listing |
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