Validated cleaning processes between spaces are described as which of the following?

• A. Optional and informal
• B. Unnecessary if PPE is used
• C. Ad hoc and unsystematic
• D. Validated, documented procedures to remove residual drug contamination across spaces

Answer: (D)

Cleaning between spaces must be done with validated, documented procedures so that transitions reliably remove residual drug contamination. PPE protects individuals during handling, but it doesn’t eliminate residues on surfaces or prevent cross-spaces contamination, which is why cleaning practices must be proven effective and repeatable. An informal or ad hoc approach lacks defined performance criteria and verifiable results, increasing the risk of carryover. A validated cleaning process includes a written protocol with specific cleaning agents, concentrations, contact times, mechanical action, rinsing and drying steps, plus objective verification (like swab or rinse testing) to show residues meet predefined limits. Ongoing documentation and periodic revalidation ensure the method stays effective over time.