Method for directly preparing bacterial liquid for drug sensitivity experiment from blood culture positive specimen

The invention provides a method for directly preparing a bacterial liquid for a drug sensitive experiment from a blood culture positive specimen, which comprises the following steps: sucking the blood culture positive specimen into a centrifuge tube containing separation gel, mixing the blood culture positive specimen with the separation gel to obtain a liquid to be centrifuged, and centrifuging the liquid to obtain the bacterial liquid for the drug sensitive experiment. The liquid to be centrifuged of the blood culture positive specimen is centrifuged, target bacteria of the blood culture positive specimen are left in supernate obtained after the liquid to be centrifuged is centrifuged, first supernate is formed, the target bacteria in the first supernate are counted, the number of first bacteria in the first supernate is obtained, and the number of second bacteria in the second supernate is obtained; and deducing the first concentration of the first supernatant according to the number of the first bacteria,