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What is the minimum time required for hand washing according to 797 guidelines?

  1. 15 seconds

  2. 20 seconds

  3. 30 seconds

  4. 1 minute

The correct answer is: 30 seconds

The minimum time required for hand washing according to the United States Pharmacopeial Convention (USP) Chapter <797> guidelines is 30 seconds. This duration is emphasized to ensure effective removal of contaminants and to maintain aseptic technique in the preparation of sterile products. The guidelines reflect standards for practices that minimize the risk of contamination during compounding, particularly in environments where sterile medications are being prepared. Hand washing is a critical step in infection control and prevents the introduction of pathogens into sterile preparations. The 30-second timeframe is supported by evidence indicating that thorough washing, which includes scrubbing all surfaces of the hands and forearms, significantly reduces microbial load. This practice aligns with broader public health recommendations for effective hand hygiene, reinforcing the importance of adherence to this guideline in pharmacy practice.