诊断:诊断感染性疾患,首先是确定致病菌。自从 Kass 中段尿培养法确立以来,目前对于尿路感染的诊断仍以尿中细菌数超过10~5/ml 为依据;10~4/ml 以下则为尿污染(Contamination)。但是如果尿中存在同一种细菌在10~4/ml 以上,也常常被看成尿路感染。Robins 等通过对未经离心沉淀尿液的镜检发现,在细菌数超过10~5/ml 的菌数中,尿中白细胞增多同时有细菌存在者占94%,而在另一组被认为是“无菌尿”中二者同时 Diagnosis: Diagnosis of infectious diseases, the first is to identify pathogens. Since the establishment of the Kass mid-urinary culture, the current diagnosis of urinary tract infections is based on the presence of more than 10-5% of the bacteria in the urine and less than 10-4 / ml of contamination. However, if there is more than 10 ~ 4 / ml of the same bacteria in the urine, it is often regarded as urinary tract infection. Robins et al. By microscopic examination of urine that had not been pelleted by centrifugation, it was found that in cases where the number of bacteria exceeded 10-5 / ml, urinary leukocytosis was 94% in the presence of bacteria and in the other group was considered to be “Sterile urine ” in both at the same time