Expert Witness in USP <797> Compliant Pharmacy Design and Construction
Bernstein & Associates, Architects, through its principal William N. Bernstein, AIA, has provided expert witness services in matters involving the design and construction of USP <797> compliant pharmacies and sterile compounding facilities and related properties. Attorneys litigating cases that involve construction defects, failures to achieve required ISO classifications, primary engineering control (PEC) selection and integration problems, buffer room and anteroom design failures, pressurization cascade failures (positive pressure for non-hazardous sterile compounding), HEPA filtration and air-change-per-hour deficiencies, gowning and anteroom layout defects, segregated compounding area (SCA) design problems, surface and joint cleanability failures, environmental monitoring deficiencies traceable to facility design, accessibility violations, fire safety and egress issues, water infiltration and building envelope failures, phased-construction disputes, and other claims related to the design and construction of USP <797> compliant pharmacies require an expert witness architect who understands both the applicable building codes and standards and the practical realities of how USP <797> is applied in the design, construction, and renovation of real sterile compounding facilities.
About USP <797> Compliant Pharmacy Design and Construction
USP <797> compliant pharmacy design and construction encompasses sterile compounding facilities, including hospital pharmacy IV admixture rooms, hospital satellite sterile compounding suites, ambulatory infusion center sterile compounding rooms, 503A pharmacy sterile compounding facilities, 503B outsourcing facility sterile compounding suites, oncology infusion preparation areas (sterile, non-hazardous portions), and the support spaces that serve them, including ISO 5 primary engineering controls (LAFW, BSC, CAI, CACI), ISO 7 buffer rooms, ISO 7 or ISO 8 anterooms, segregated compounding areas, gowning rooms, storage areas, and material and equipment airlocks.
The design and construction of USP <797> compliant pharmacies is governed by a complex framework of technical standards, including the applicable building code (for example, in New York City, the New York City Building Code), the International Building Code, ICC A117.1, NFPA 101 Life Safety Code, NFPA 99 Health Care Facilities Code, ASHRAE 170, USP General Chapter <797> for sterile compounding (which prescribes ISO classifications, pressurization, air changes, surface and joint requirements, and primary engineering control standards), USP General Chapter <800> where the facility also handles hazardous drugs, ISO 14644 cleanroom classification standards, FDA cGMP for 503B outsourcing facilities, state board of pharmacy regulations, the FGI Guidelines for Design and Construction of Hospitals (Pharmacy chapter), ADA requirements, and state and local department of health requirements.
Disputes commonly arise over construction defects affecting building envelopes, interior finishes, and compounding spaces; failure to achieve required ISO 5 conditions at primary engineering controls; failure to achieve required ISO 7 buffer room and ISO 7 or ISO 8 anteroom conditions; PEC selection and integration problems; pressurization cascade failures (failure to maintain required positive pressure differentials between buffer room, anteroom, and surrounding space); HEPA filtration design and certification deficiencies; air-change-per-hour failures; gowning room and anteroom layout problems including non-compliant line-of-demarcation construction; surface materials and joint construction that fail USP <797> cleanability requirements; environmental monitoring failures traceable to facility design defects; non-compliant accessibility features; inadequate fire-rated assemblies and egress; and disputes arising from phased-construction projects. Responsibility for compliance with the applicable standards is shared, in different ways, among the operator, the landlord, the design professional, the contractor, subcontractors, specialty vendors, and the party responsible for ongoing maintenance, and litigation in this area frequently turns on the allocation of responsibility for design decisions, construction means and methods, and post-occupancy maintenance.
Expert Witness Services Related to USP <797> Compliant Pharmacy Design and Construction
Expert witness services in USP <797> compliant pharmacy design and construction matters typically include a careful review of the project documents (drawings, specifications, submittals, RFIs, change orders, permits, certificates of occupancy, ICRA plans, department of health filings and approvals, lease agreements, commissioning reports, and as-built conditions) (along with cleanroom certification reports, environmental monitoring records, HEPA certification reports, PEC certification reports, and HVAC validation documentation), a site survey to measure and document the conditions at issue, comparison of those conditions against the applicable building codes, life safety codes, USP <797> requirements, ISO 14644 standards, accessibility standards, and industry standards of care, review of construction administration records and maintenance histories, and the preparation of clear, well-supported opinions regarding the cause of the defect or failure, the responsibility of the various parties, and the standard of care applicable to the design, construction, and maintenance of USP <797> compliant pharmacies.
An effective USP <797> compliant pharmacy design and construction expert witness must be able to explain technical requirements — USP <797> ISO classifications and the buffer room/anteroom/PEC hierarchy, primary engineering control selection and integration, pressurization cascade design, HEPA filtration and air-change-per-hour requirements, gowning and anteroom layout, surface and joint cleanability, environmental monitoring and its relationship to facility design, fire-rated assembly construction, egress geometry, accessibility clearances, and building envelope detailing — in plain language to judges, juries, arbitrators, and mediators, and must have the credentials, written record, and courtroom-ready communication skills to render credible opinions.
Mr. Bernstein is a Yale-trained, NCARB-certified, LEED-accredited, registered architect. He has expertise in architectural design, engineering design, and construction as the founder/owner of an architectural firm, Bernstein & Associates, Architects, (1990-present) and as the founder/owner of a construction project management firm, Empire Projects, Inc. (2003-Present). He has been the expert witness (as of May 2026) on (40) cases involving design and construction (2006-present) across the United States and Internationally.
Mr. Bernstein’s USP <797> compliant pharmacy design experience includes USP <797> compliant sterile compounding pharmacy projects including hospital central pharmacies, IV admixture rooms, and pharmacy compounding commissions in New York, Connecticut, and Las Vegas. Mr. Bernstein has authored published work on USP <797> compliant pharmacy design and consulting. This depth of hands-on architectural design experience — from program development and code analysis through construction administration and commissioning — provides the technical foundation needed to render credible expert opinions on USP <797> compliant pharmacy design and construction disputes.
Contact
Please contact Bernstein & Associates, for expert witness services related to the design and construction of USP <797> compliant pharmacies.