Final answer:
A broken seal on a multi sample needle indicates potential contamination and loss of sterility, leading to injury, infections, and increased risk of needle sticks for healthcare providers.
Step-by-step explanation:
A multi sample needle with a broken seal should not be used to draw blood because the integrity of the needle is compromised, leading to potential injury and infections. When the seal is broken, it is possible that the needle is no longer sterile. This can expose the patient to various pathogens, including those that can cause serious disease, like HIV. Furthermore, the sharpness and precision of the needle can be affected, which may result in an improper draw, damage to the blood vessel, and pain for the patient. Phlebotomists and other healthcare providers have an increased risk of needle sticks, and using only Uncompromised, sterile needles is crucial for their safety.