What is the recommended angle for needle insertion during venipuncture?

The recommended angle for needle insertion during venipuncture is typically between 15 to 30 degrees. This angle allows for optimal access to the vein while minimizing trauma to the surrounding tissue. When the needle is inserted at a too shallow angle, it might not fully penetrate the vein, and an angle that is too steep can lead to complications such as puncturing through the vein or hitting surrounding structures. Therefore, maintaining an angle within this range enhances the likelihood of successfully entering the vein on the first attempt, making the process more comfortable for the patient and efficient for the technician.