What must always be done with contaminated needles?

Needles that have been contaminated must never be recapped, reused, or washed, as these practices can expose individuals to the risk of infections, including the transmission of bloodborne pathogens. Instead, contaminated needles should be disposed of in a designated sharps container that is puncture-resistant and labeled properly. This ensures that they are handled safely and avoid causing injury to anyone involved in handling waste.

The correct answer reflects best practices for needle disposal, prioritizing safety and the prevention of healthcare-related transmission of infections. Safe disposal practices are crucial in minimizing risks associated with contaminated medical waste in healthcare settings.