PTCB Certified Pharmacy Technician (PTCE)Patient Safety and Quality AssuranceHard
A pharmacy technician is preparing to compound a non-sterile cream. Which of the following is the MOST critical step to prevent microbial contamination of the final product?
- AFiltering the final cream through a 0.22-micron filter.
- BWearing sterile gloves throughout the compounding process.
- CUsing a laminar airflow workbench (LAFW) for all steps.
- DPerforming thorough hand hygiene before donning gloves.
Show answer & explanationAnswer & explanation
Correct answer: D. Performing thorough hand hygiene before donning gloves.
While all options relate to contamination control, performing thorough hand hygiene before donning gloves is the most critical initial step in preventing microbial contamination. Gloves are not sterile barriers unless specifically stated and can become contaminated if hands underneath are not clean. Proper hand hygiene significantly reduces the microbial load transferred to gloves, equipment, and ultimately, the product.
Why the other options are wrong
- A. Filtering through a 0.22-micron filter is for sterile liquids, not for non-sterile creams, and is not feasible for viscous formulations.
- B. Sterile gloves are not typically required for non-sterile compounding; clean gloves suffice after proper hand hygiene.
- C. LAFWs are for sterile compounding, not typically required for non-sterile creams, and would be an overkill for basic microbial control.
Non-Sterile Compounding Contamination Control
Measures taken to minimize microbial and other contamination in non-sterile preparations.
- Hand hygiene is paramount.
- Use clean equipment and surfaces.
- Environmental controls are less stringent than sterile compounding.
Memory trick: Clean Hands are the Start, For a Pure Compounded Art!