What is the gauge size of a butterfly needle used for transfusion of blood and blood products?

Explanation:

The gauge size of a butterfly needle used for transfusion of blood and blood products generally depends on the viscosity of the substance being transfused. In most instances, an 18 gauge butterfly needle is used for such transfusions. This is because the larger diameter of the 18 gauge needle allows for the rapid and smooth transfer of blood and blood products, minimizing the risk of damage or clotting. Smaller gauges like 20, 22, or 24 could be used for other applications, such as administering medications or collecting samples.