Environmental Testing - Mpje

1. Under USP Chapter 797, which of the following best describes air sampling in the sterile compounding environment?
   Answer: Air sampling must use a volumetric air sampler to collect viable airborne microbes, ensuring sterility in the compounding environment. USP 797 requires active air sampling using a volumetric air sampler that draws a defined volume of air through or onto growth media, enabling quantification of viable airborne contamination. B correctly describes this method. A is incorrect because air sampling is not optional under USP 797; it is a required component of the environmental monitoring program. C is incorrect because while settle plates may be used as a supplemental method, they are not the only approved method; active volumetric sampling is the primary USP 797 air monitoring approach. D is incorrect because air sampling under USP 797 is specifically for viable (microbial) contamination, not non-viable particles.
2. Under USP Chapter 800, what environmental monitoring is required for hazardous drug compounding areas?
   Answer: Wipe sampling for surface contamination is required at defined intervals to ensure effective hazardous drug containment and clean compounding surfaces. USP Chapter 800 requires wipe sampling of surfaces in and around the hazardous drug compounding area at defined intervals to verify that containment engineering controls are functioning and that hazardous drug residue has not spread beyond the designated areas. A correctly identifies wipe sampling for HD surface contamination as the primary environmental monitoring requirement under USP 800. B is incorrect because HD contamination monitoring is explicitly required under USP 800; the fact that HDs are chemically rather than microbially hazardous makes the chemical surface monitoring more critical, not less. C is incorrect because particle counting measures particulate and microbial air quality, not chemical contamination; wipe sampling for HD residue is the required monitoring approach. D is incorrect because wipe sampling must be performed at defined intervals consistent with the facility's operations, not only annually.
3. Under USP Chapter 797, what ISO classification is required for the buffer room where Category 2 sterile compounding is performed?
   Answer: ISO 7. USP 797 requires the buffer room where Category 2 sterile compounding occurs to meet ISO 7 classification. The buffer room must be cleaner than the ante-area (ISO 8) and provides the controlled environment within which the ISO 5 PEC operates. D correctly identifies ISO 7 as the buffer room requirement. A is incorrect because ambient air is far too contaminated for a sterile compounding buffer room. B is incorrect because ISO 5 is required for the PEC, not the entire buffer room. C is incorrect because ISO 6 is not the standard required for the buffer room under USP 797.
4. Under USP Chapter 797, which of the following must occur before a new cleanroom facility may begin compounding Category 2 CSPs?
   Answer: Initial environmental monitoring must be completed with acceptable results before starting Category 2 compounding in the cleanroom. Before a new facility begins Category 2 sterile compounding, USP 797 requires initial environmental qualification including surface sampling, air sampling, and non-viable particle counting to confirm that the cleanroom meets required ISO classifications and is suitable for sterile compounding. D correctly identifies this prerequisite. A is incorrect because DEA registration is unrelated to environmental monitoring prerequisites for sterile compounding. B is incorrect because state board notification, while potentially required, is not the operative USP 797 prerequisite. C is incorrect because environmental testing must be completed and show acceptable results before operations begin, not after.
5. A sterile compounding pharmacy outsources its environmental monitoring to a third-party certified environmental monitoring company. The company performs the sampling and reports results to the pharmacy. Which of the following best describes the pharmacy's compliance obligations regarding these outsourced results?
   Answer: The pharmacy must review results and ensure compliance with USP 797 requirements. Outsourcing environmental monitoring does not transfer the pharmacy's compliance obligations. The pharmacy must still review results, respond to exceedances, implement corrective actions, maintain records, and ensure the contractor's methods comply with USP 797. B correctly identifies these continuing obligations. A is incorrect because compliance responsibility remains with the pharmacy regardless of outsourcing. C is incorrect because financial obligation is not the extent of the pharmacy's responsibility. D is incorrect because DEA registration is irrelevant to environmental monitoring contractor qualification.
6. How frequently must environmental monitoring be performed under USP Chapter 797 for a facility performing Category 2 sterile compounding?
   Answer: Monthly viable air and surface sampling is required for Category 2 compounding. Current USP Chapter 797 specifies defined environmental monitoring frequencies for Category 2 sterile compounding by ISO classification area, rather than leaving frequency to a general risk-based discretion. ISO 5 PEC areas require viable air and surface sampling at defined intervals during or after each compounding day or at minimum monthly; ISO 7 and ISO 8 classified areas require at minimum monthly viable air and surface sampling. After any action level exceedance, monitoring frequency must be increased until acceptable results are re-established. A correctly reflects these USP 797 Category 2 requirements. B is incorrect because monitoring must be scheduled and routine, not only reactive to suspected contamination. C is incorrect because annual board inspection-triggered monitoring is far too infrequent to meet USP 797 standards. D is incorrect because USP 797 requires ongoing periodic monitoring throughout operations, not only at initial certification.
7. Under USP Chapter 797, personnel must demonstrate competency in garbing through which of the following assessments?
   Answer: Gloved fingertip sampling to confirm no contamination during garbing. USP 797 requires gloved fingertip sampling as the primary competency assessment for garbing: after the individual has completed donning PPE, samples are taken from the fingertips of both gloved hands to demonstrate that the garbing process does not introduce microbial contamination. D correctly identifies this required assessment. A is incorrect because written examinations alone do not assess the hands-on competency that garbing requires. B is incorrect because documented testing is explicitly required, not just observed by the PIC. C is incorrect because verbal quizzes assess knowledge but not the procedural competency that fingertip sampling evaluates.
8. Under USP Chapter 797, how must environmental monitoring records be maintained and for how long?
   Answer: Records must be kept for at least one year and be available for inspection. USP 797 requires environmental monitoring records to be retained for at least one year and organized to support trend analysis, with accessibility for inspection. State law may require longer retention. C correctly identifies these requirements. A is incorrect because records cannot be discarded after preparations are dispensed; the minimum retention period is one year. B is incorrect because retention is based on a calendar period, not the BUD of individual preparations. D is incorrect because FDA submission is not required for routine environmental monitoring records at 503A pharmacies.
9. Under USP Chapter 797, which of the following is a required component of a written environmental monitoring program?
   Answer: Sampling locations, frequency, methods, growth media, action levels, and investigation procedures. A comprehensive written environmental monitoring program must include: sampling locations, frequency, methods, growth media used, action and alert levels for each location, investigation and corrective action procedures, and responsible personnel. A correctly identifies these required components. B is incorrect because vendor information alone is far too narrow. C is incorrect because the ISO certification is one element but the written program must be far more comprehensive. D is incorrect because scheduling alone omits methods, action levels, and corrective action procedures.
10. A sterile compounding pharmacy has not performed environmental monitoring for four months due to staff turnover and workload. The pharmacy has continued compounding throughout this period. Which of the following best analyzes the compliance concern?
    Answer: The pharmacy's failure to monitor for four months violates USP 797, risking undetected microbial contamination in compounded preparations. A four-month monitoring gap is a serious USP 797 compliance failure. Sterile compounding during an unmonitored period means the environment's microbial status was unknown, which represents a patient safety risk. The pharmacy must resume monitoring, investigate the gap, and assess the potential impact. B correctly identifies the gravity of the situation. A is incorrect because microbial contamination is not visible to the naked eye and cannot be detected by observation. C is incorrect because staff turnover does not excuse compliance failures. D is incorrect because retrospective catch-up monitoring is not meaningful; the gap represents real time when contamination could have occurred undetected.
11. A pharmacy's USP 800 wipe sampling results show hazardous drug residue above the established threshold in the ante-area outside the hazardous drug buffer room. Which of the following best describes the required response?
    Answer: Investigate contamination source, decontaminate area, implement corrective measures, and confirm with follow-up sampling. Hazardous drug residue above threshold in the ante-area indicates a containment failure requiring comprehensive response: investigate the contamination source, decontaminate the affected area, assess personnel exposure, improve containment measures, and confirm remediation. D correctly identifies this comprehensive response. A is incorrect because ante-area contamination above threshold is a significant finding requiring action. B is incorrect because warning signs without remediation do not address the contamination. C is incorrect because increasing sampling frequency alone without addressing the contamination source is insufficient.
12. Under USP Chapter 797, what is the primary purpose of environmental monitoring in a sterile compounding facility?
    Answer: To detect microbial contamination in the cleanroom environment. Environmental monitoring under USP 797 is designed to detect microbial contamination in the cleanroom environment, allowing the pharmacy to identify problems and take corrective action before sterility is compromised and patient harm occurs. B correctly identifies this protective purpose. A is incorrect because environmental monitoring addresses microbial contamination, not DEA security specifications. C is incorrect because while environmental monitoring records may be reviewed in inspections, the primary purpose is patient safety. D is incorrect because temperature and humidity monitoring serves formulation stability purposes, not staff comfort.
13. Under USP Chapter 797, what is the significance of identifying specific microbial species in environmental monitoring results?
    Answer: Species identification helps trace contamination sources for targeted corrective actions. Species identification is a valuable diagnostic tool. The type of organism detected helps identify the likely source of contamination: skin flora suggests personnel practice issues, environmental organisms suggest HVAC or cleaning issues, and water-associated organisms suggest moisture intrusion. C correctly identifies this diagnostic utility. A is incorrect because species identity provides valuable root cause information. B is incorrect because insurance liability is not the purpose of species identification. D is incorrect because species identification is required for all Category 2 sterile compounding facilities under USP 797 regardless of distribution scope.
14. Under USP Chapter 797, which of the following describes the two main methods used for surface environmental monitoring in sterile compounding areas?
    Answer: Contact plates and swab sampling for microbial contamination. Surface environmental monitoring in sterile compounding uses contact plates (replicate organism detection and counting -- RODAC -- plates) or swab sampling to detect microbial contamination on surfaces within the cleanroom. C correctly identifies these two methods. A is incorrect because UV scanning and chemical strips are not USP 797 surface monitoring methods. B is incorrect because thermal imaging and spectroscopy are not surface monitoring techniques under USP 797. D is incorrect because visual inspection and pH testing do not detect microbial contamination.
15. Under USP Chapter 800, where must wipe sampling be performed to assess hazardous drug surface contamination?
    Answer: In the compounding area and any location where hazardous drugs are stored or transported. USP 800 requires wipe sampling both within the compounding area and at locations outside where hazardous drugs may spread -- including transport corridors, ante-areas, and pass-throughs -- to detect migration of contamination. C correctly identifies this comprehensive sampling scope. A is incorrect because sampling only inside the PEC is insufficient to detect contamination spread. B is incorrect because sampling is location-based under USP 800, not limited to frequently touched surfaces. D is incorrect because general dispensing countertops are not the primary location of concern.
16. Under USP Chapter 797, what are action levels in environmental monitoring, and what must occur when they are exceeded?
    Answer: Action levels are microbial limits; exceeding them requires investigation, corrective actions, and re-testing. Action levels are defined contamination thresholds under USP 797. When results exceed action levels, the facility must investigate the source of contamination, identify the root cause, implement corrective actions, and confirm through re-testing that the environment has returned to acceptable limits before resuming compounding. D correctly describes this framework. A is incorrect because action levels relate to microbial counts, not cleaning agent concentrations. B is incorrect because action levels are environmental, not personnel performance metrics. C is incorrect because action levels are microbial contamination thresholds, not staffing thresholds.
17. Under USP Chapter 797, which of the following describes the purpose of non-viable particle counting in the sterile compounding environment?
    Answer: Non-viable particle counting verifies cleanroom ISO classification maintenance. Non-viable particle counting verifies that the cleanroom maintains its ISO air quality classification. Exceedances indicate that engineering controls may not be functioning properly, which could also allow viable microbial contamination. A correctly identifies this purpose. B is incorrect because viable microbial monitoring and non-viable particle counting are complementary, not substitutable. C is incorrect because hazardous drug residue monitoring uses chemical wipe sampling, not particle counting. D is incorrect because particle counts must be monitored on an ongoing basis, not only during initial certification.
18. Under USP Chapter 797, what must be done with environmental monitoring results that exceed action levels before compounding may resume in the affected area?
    Answer: Re-clean, investigate, correct, and confirm acceptable environmental levels before resuming compounding. Before resuming compounding after an action level exceedance, USP 797 requires that re-cleaning and decontamination occur, a root cause investigation be completed, corrective actions be implemented, and follow-up environmental monitoring confirm acceptable results. B correctly identifies these required steps. A is incorrect because a PIC waiver is not a recognized mechanism for resuming compounding after an exceedance. C is incorrect because the 24-hour rule is not an appropriate standard; confirmed monitoring results determine readiness. D is incorrect because visual assessment of cleanliness does not detect microbial contamination.
19. Under USP Chapter 797, which of the following locations must be sampled as part of environmental monitoring in a sterile compounding facility?
    Answer: The ISO 5 PEC work surface, ISO 7 buffer, and ISO 8 ante-area. USP 797 requires environmental monitoring across multiple locations: the ISO 5 PEC work surface and interior, the ISO 7 buffer area, the ISO 8 ante-area, and any other locations identified as high risk in the facility's monitoring plan. A correctly identifies this comprehensive sampling requirement. B is incorrect because only exterior PEC surfaces is far too narrow. C is incorrect because sampling is location-based under ISO classifications, not person-based. D is incorrect because storage areas are not the primary environmental monitoring focus.
20. A pharmacy conducts monthly environmental monitoring in its sterile compounding cleanroom. Results for the past three months show progressively increasing CFU counts that remain below action levels. Which of the following best describes the appropriate response?
    Answer: Conduct an investigation and review processes due to the increasing CFU trend. USP 797 incorporates alert levels -- thresholds below action levels that serve as early warning indicators. A trend of increasing CFU counts, even below action levels, warrants investigation and process review to prevent reaching action levels. B correctly identifies this proactive approach. A is incorrect because trending data below action levels should not be ignored. C is incorrect because waiting for action level exceedance before investigating a clear upward trend is reactive rather than proactive. D is incorrect because state board reporting is not triggered by below-action-level trending data.

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