At what angle should the needle be inserted during venipuncture?

During venipuncture, the needle should typically be inserted at an angle of 15 to 30 degrees. This angle allows for optimal access to the vein while balancing the risk of puncturing through the vessel or causing excessive discomfort to the patient. At this angle, the bevel of the needle is positioned correctly to enter the vein without causing significant trauma to the vein wall, facilitating smooth blood flow into the collection device.

Choosing a steeper angle, such as 30 to 45 degrees, may increase the likelihood of missing the vein, while a shallower angle, such as 5 to 10 degrees, might risk puncturing through the vein’s opposite wall. Thus, the 15 to 30 degree range is considered ideal to effectively and safely perform venipuncture.