干化学法与沉渣镜检法对比检测尿中红细胞和白细胞

目的探讨迪瑞H-300尿液分析仪干化学法与尿沉渣镜法检测红细胞和白细胞的一致性。方法对3678例尿液分析仪干化学测定全部为阴性、619例测定为隐血±至＋＋同时白细胞阴性的尿液标本做尿沉渣镜检。结果3678例阴性标本尿沉渣镜检检出白细胞每高倍视野5～30个以上206例，假阴性率占5．6％；红细胞每高倍视野3～15个115例，假阴性率为3．1％。在619例隐血阳性同时白细胞阴性的尿标本中，红细胞假阳性率为3．1％，白细胞假阴性率为5．5％。结论临床上使用干化学法做尿常规出现全阴性时，为了避免漏、误诊，必须进行显微镜沉渣检查。

Comparative analysis of dry chemical method and the examination of urine erythrocytes and leukocytes under microscope

Objective To explore the concordance of Dirui H-300 urinary analyzer and urinary sediment test under microscope in examining urine erythrocytes and leukocytes. Methods Urinary sediment test was carried out for 3 678 cases of urine specimen with negative result from urine dry chemical method, and 619 cases with OB±-＋＋ and leucocyte negative. Results Urinary sediment test showed that in 3 678 negative specimen, 206 cases were with phanerous leucocyte 5-10/HP （per high-power field） to 10-30/HP, and the false negative rate was 5.6%; 115 cases were with erythrocyte 3-15/HP, and the false negative rate was 3.1%. In 619 urine specimen with OB positive and leucocyte negative, the phanerous erythrocytes account for 3.1%, leucocyte for 5.5%. Conclusion Clinically, when the results of urine routine test are all negative, urinary sediment test under microscopy must be carried out so as to avoid missed diagnosis and misdiagnosis.