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目的分析免疫法、化学法便潜血试验对消化道出血性疾病误诊的原因,探讨免疫法、化学法粪便潜血试验联合应用的价值。方法消化内科粪便样品300例,使用化学法和免疫法分别检测,对潜血试验结果比较,并进行分析讨论。结果免疫法和化学法阳性率及真阳性率比较差异有统计学意义(P<0.01)。结论免疫法应用于上消化道出血性疾病的诊断应慎重,而对于下消化道出血性疾病则是首选,应将两种方法联合应用于粪便常规检查和体检普查项目,并结合受检者自身情况进行综合判断,以免造成漏诊和误诊。
Objective To analyze the causes of misdiagnosis of gastrointestinal hemorrhagic disease caused by occult blood test by immunological and chemical methods and to explore the value of combined immunological and chemical fecal occult blood tests. Methods 300 cases of digestive stool samples were digested by chemical method and immunoassay, respectively. The results of the occult blood test were compared and analyzed. Results The positive rates of immunization, chemiluminescence and true positive rates were significantly different (P <0.01). Conclusions Immunoassay should be used carefully in the diagnosis of upper gastrointestinal bleeding disease, and is the first choice for lower gastrointestinal bleeding disease. Both methods should be used in routine stool examination and physical examination, combined with the subjects themselves Comprehensive judgment of the situation, so as to avoid misdiagnosis and missed diagnosis.