Why do blood cultures have to be drawn using a winged infusion set?

Blood cultures are often drawn using a winged infusion set, or butterfly needle, because it allows for easier access to small veins and provides better control during the collection process. The design minimizes the risk of hemolysis and contamination, ensuring a more accurate representation of the bloodstream. Additionally, the flexibility of the winged set helps in maintaining a steady flow, which is crucial for obtaining sufficient blood volume for the culture.