血清ADA水平和T-spot.TB联合检测在肺结核诊断中的应用

目的: 联合应用血清腺苷脱氨酶(ADA)水平检测和结核感染T细胞斑点试验(T-spot.TB),探讨其对肺结核诊断的临床价值。方法: 选取本院拟诊为肺结核患者159例,分为肺结核组(n=91)和非肺结核组(n=68),随机选取健康体检者80名作为健康对照组,检测各组受试者血清ADA水平和T-spot.TB斑点数,比较各组ADA水平和T-spot.TB的阳性率及其对肺结核诊断的灵敏性与特异性。结果: 肺结核组、非肺结核组和健康对照组受试者血清ADA水平分别为(22.10±6.60)、(16.90±6.35)和(8.70±5.98)U·L^-1,肺结核组患者血清ADA水平明显高于非肺结核组和健康对照组(P<0.05)。血清ADA水平对肺结核诊断的阳性率为56.0%,T-spot.TB对肺结核诊断的阳性率为87.9%。采用平行联合试验,检测灵敏性为91.2%;采用系列联合试验,特异性为94.6%。结论: 联合检测血清ADA水平及T-spot.TB斑点数能够显著提高肺结核临床诊断。

Application of combined detection of serum levels of ADA and T-spot.TB in diagnosis of pulmonary tuberculosis

Objective:To combine the detection of serum levels of adenosine deaminase (ADA) and T-cell spot test (T-spot.TB),and to explore their significances in diagnosis of pulmonary tuberculosis.Methods:159 patients suspected with pulmonary tuberculosis were selected and divided into pulmonary tuberculosis group and non-tuberculosis group (n=68);80 healthy people were randonly selected as healthy control group.The serum ADA levels and number of T-spot of the subjects in three groups were detected.Ther serum ADA levels and the positive rates of T-spot.TB in various groups and their sensitivities and specifities were compared. Results:The serum ADA level of the patients in pulmonary tuberculosis gruop was (22.10±6.60)U·L-1;those in non-tuberculosis group and healthy control group were (16.90±6.35)and (8.70±5.98)U·L-1;the serum ADA level in pulmonary tuberculosis group was significantly higher than those in non-tuberculosis group and heathy control group (P<0.05).The positive rate of serum ADA level in diagnosis of pulmonary tuberculosis was 56% and the T-spot.TB positive rate in diagnosis of pulmonary tuberculosis was 87.9%. Combined use of parallel test, the detection sensitivity was 91.2%;using the series of joint tests,the specificity was 94.6%.Conclusion:Combined detection of serum level of ADA and T-spot.TB can significantly improve the clinical diagnosis efficacy of pulmonary tuberculosis.