在感染性疾病的鉴别诊断上常用的白细胞诊断方法有外周白细胞的总数及分类、中毒性颗粒、D(?)hle 小体、胞浆内空泡形成及碱性磷酸酶测定等,但有时这些指标仍难以证实是否有细菌感染存在。四唑氮兰(NBT)试验作为急性细菌感染的一种辅助诊断方法始于1968年。细菌感染时外周血液中的中性白细胞将 NBT 染料还原为甲(?)的作用自发地增强,染料的摄入和还原取决于细胞的吞噬和氧化能力,因之,利用还原的染料(在显 Commonly used in the differential diagnosis of infectious diseases leucocyte diagnostic methods are the total number of peripheral leukocytes and classification, toxic particles, D (?) Hle bodies, vacuolar formation of cytoplasm and alkaline phosphatase determination, but sometimes these Indicators still difficult to confirm whether there is a bacterial infection. As a diagnostic aid for acute bacterial infections, the tetrazolium nitrogen blue (NBT) test began in 1968. Neutrophils in the peripheral blood of bacterial infections spontaneously enhance the function of reducing NBT dye to A (?). The uptake and reduction of dye depend on the phagocytic and oxidative capacity of the cells. Therefore, the use of reduced dyes