Final answer:
In venipuncture, the needle is typically inserted at a 15 to 30 degree angle to the skin, depending on various factors like vein size, patient age, and needle size.
Step-by-step explanation:
The correct angle for venipuncture, which is the process of puncturing a vein with a needle to draw blood, administer medication, or for other intravenous (IV) therapies, depends on multiple factors such as the vein's size and location, patient's age, and needle size. However, the standard angle for venipuncture is often taught to be at 15 to 30 degrees relative to the skin. This shallow angle helps to prevent the needle from going too deep and piercing through the vein. It's critical that healthcare professionals are trained in venipuncture to understand the nuances and variations in technique that may be required in different clinical situations.