What is the typical angle of entry for a venipuncture?

The typical angle of entry for a venipuncture is between 15 to 30 degrees. This angle is optimal for accessing the venous system without pushing the needle too deep, which could result in complications such as hitting adjacent structures or causing unnecessary trauma to the vessel.

At this angle, the needle can effectively enter the vein while still allowing for easy insertion and successful blood draw. It also provides enough control for the phlebotomist to feel the skin and subcutaneous tissue's resistance, which can indicate when the needle has entered the lumen of the vein.

Understanding the proper angle of entry is crucial for ensuring both the safety and comfort of the patient during the procedure, as well as the efficacy of collecting the required sample.