Bacterial catalase assay
Certain bacteria secrete the enzyme peroxynitrite, which causes hydrogen peroxide to produce water and primordial oxygen, followed by the formation of oxygen mo
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Bacterial inoculation tests on blood and bone marrow specimens
Strictly aseptic technique, 3-5 ml of venous blood should be injected into the blood culture bottle and immediately sent to the laboratory, incubated at 35℃ fo
Fecal specimen processing test
The fecal specimen taken directly affects the accuracy of the results, usually using naturally excreted feces, specimen collection precautions are as follows:
bacterial culture experiment
According to the preliminary clinical diagnosis and bacterial species and the different gas needs of bacteria to be examined, it can be divided into aerobic cul
Sputum specimen processing experiments
General bacterial smear examination: select the purulent or bloody part of sputum, smear it into a uniform thin slice, perform Gram staining and microscopic exa
Bile hemolysis test
Bile salts, sodium deoxycholate and sodium taurocholate selectively lysed Streptococcus pneumoniae, while other streptococci tolerated them, the mechanism of wh
Bacterial growth and morphology observation experiment
Observe the bacterial colonies: Observation methods generally available to the naked eye for observation, will be placed in front of a flat dish culture of nat
Serum uric acid (UA) assay by phosphotungstic acid reduction assay experiment
Uric acid in deproteinized blood filtrate is oxidized to allantoin and carbon dioxide by tungstic acid in alkaline solution, and phosphotungstic acid is reduced
Urine 17-ketosteroids assay
Urine is hydrolyzed by acid, changing bound 17-ketosteroids to free 17-ketosteroids. The latter can react with m-dinitrobenzene in alkaline solution to give a r