Nitrotetrazole nitrogen blue test

During the bactericidal process, neutrophils increase their energy consumption. The hydrogen-reduced nitrogen-reducing nitrogen blue tetrazolium becomes blue-black dots or masses, which are deposited in the granulocyte cytoplasm. The positive rate is determined based on the particles deposited in the cells . This test is mainly used to detect the intracellular killing function of neutrophils. It can be used to diagnose chronic granulomatous disease in children and to identify bacterial and viral infections.