Blood culture to look for bacteria in the blood of a patient with sepsis is a very important test because it directly tells us what type of bacteria is causing the disease.

Positive blood cultures in sepsis are the gold standard for medical diagnosis. Blood cultures also help identify bacteria, create antibiotic susceptibility tests, increase treatment success rates, and reduce antibiotic resistance.

When taking different blood tubes, it is necessary to take the tubes in the correct order, with the goal of minimizing the contamination of anticoagulants from the previous blood tube to the next blood tube, affecting the test results.

Blood cultures are performed when there are signs of blood infection (bacteremia or sepsis) such as high fever, chills, low blood pressure, or other symptoms. Blood cultures help assess the source of the infection. Blood culture results are also the basis for choosing antibiotics for treatment.