Final answer:
Capillary puncture is typically performed on adults when only a small quantity of blood is required. It is a less invasive method of blood collection and is commonly used for small blood samples needed for glucose monitoring or blood typing.
Step-by-step explanation:
Capillary puncture is typically performed on adults when only a small quantity of blood is required. For example, a capillary stick may be done on a finger, an earlobe, or the heel of an infant. This method of blood collection is less invasive and is commonly used for small blood samples needed for glucose monitoring or blood typing.