Helicobacter pylori test kit purchase: how to choose colloidal gold method and ELISA stability

200 cases of physical examination serum are more biased towards screening efficiency. It is recommended to do the same batch of ELISA or fluorescence immunochromatography plus card reader. Colloidal gold is easily affected by time, light, and weak yang threshold if interpreted manually. 30 to 50 cases can be selected for methodological comparison, blind interpretation, and repeatability and suspicious sample retest rules can be recorded. The registration certificate sample type must cover human serum, and the instructions have a quality control line and an interpretation window, otherwise the difference between batches will be amplified.

Do not only look at the price when purchasing, focus on checking the clinical performance data of the product, the expected use, batch number traceability, quality control product support, transportation temperature control and remaining validity period. The colloidal gold weak yang instability can require the supplier to provide positive quality control and retesting SOP, random sample retention and retesting; positive or gray area samples should be reviewed according to the process, such as ELISA, breath test or clinical diagnostic path, to avoid direct conclusions in a single method.