USP 800 is a set of national standards that tells healthcare facilities how to safely handle hazardous drugs, from the moment they arrive at a loading dock to the point a nurse administers them to a patient. Published by the United States Pharmacopeia, it exists to protect workers, patients, and the environment from exposure to medications that can cause cancer, reproductive harm, organ damage, or other serious health effects even at low doses.
The standard covers every person and every step in the chain: receiving, storing, compounding, dispensing, administering, transporting, and disposing of hazardous drugs. If you work in a hospital pharmacy, an outpatient clinic, a veterinary office, or any other healthcare setting where these drugs are present, USP 800 applies to you.
Which Drugs Count as Hazardous
USP 800 doesn’t maintain its own drug list. Instead, it points to the NIOSH List of Hazardous Drugs in Healthcare Settings, published by the National Institute for Occupational Safety and Health. NIOSH identifies drugs as hazardous when their FDA-approved labeling includes special handling information, or when the drugs meet specific criteria: they cause cancer, affect reproductive health, damage organs at low doses, are toxic to genes, or mimic the structure of other drugs that do these things.
The NIOSH list is updated periodically (the most recent version came out in 2024) and includes not just chemotherapy agents but also certain hormones, antiviral medications, and other drugs you might not immediately associate with danger. Facilities are expected to review each update and adjust their procedures accordingly. They must also evaluate any new drug that enters their inventory against the NIOSH criteria, even if it hasn’t appeared on the list yet.
What the Standard Requires for Storage
Hazardous drugs must generally be stored separately from non-hazardous medications, though some exceptions exist for certain dosage forms. The goal is containment: keeping these drugs in a defined area reduces the number of workers who come into contact with them and limits contamination if a container breaks or leaks. Facilities need written policies covering how shipments are received, inspected for damage, and moved to their designated storage locations.
Engineering Controls and Ventilation
The most technical portion of USP 800 deals with the physical spaces where hazardous drugs are prepared. The standard distinguishes between primary engineering controls (the actual hoods or cabinets where compounding happens) and secondary engineering controls (the rooms those cabinets sit in).
For sterile compounding of hazardous drugs, the requirements are strict. The compounding cabinet must sit inside a room that meets ISO Class 7 air cleanliness, maintains at least 12 air changes per hour, and holds negative pressure (at least 0.01 inches of water column) relative to the surrounding areas. Negative pressure means air flows into the room rather than out of it, preventing contaminated air from drifting into hallways or adjacent spaces. The cabinet itself must be exhausted to the outside of the building through HEPA filtration, and the exhaust ducts must vent away from any fresh air intakes.
Certain specialized cabinets require even higher air exchange rates, with a minimum of 15 air changes per hour and alarm systems that trigger when pressure drifts outside acceptable limits. USP 800 does allow a less rigorous setup for low- and medium-risk compounding, but the tradeoff is significant: any preparation made in that simpler environment can only be used within 12 hours.
For non-sterile compounding (crushing tablets into capsules, for example), the ventilation requirements are somewhat less demanding, but the room must still have negative pressure and external venting to keep drug particles from reaching other areas of the facility.
The Cleaning Process
Routine cleaning in a hazardous drug area goes well beyond wiping down a counter. USP 800 lays out a multi-step sequence that facilities must follow. For non-sterile work areas, three steps are required:
- Deactivation renders any drug residue on a surface chemically inactive or inert.
- Decontamination neutralizes and physically removes the residue by transferring it onto disposable absorbent material.
- Cleaning uses detergents and water to remove whatever traces remain, along with any other surface contaminants.
Sterile work areas add a fourth step: disinfection, which destroys microbial growth on surfaces and tools. Each of these steps requires specific agents and techniques, and facilities are expected to maintain written standard operating procedures documenting exactly how the process is carried out.
Personal Protective Equipment
USP 800 specifies what workers must wear when handling hazardous drugs, and the requirements change depending on the task. Compounding demands the highest level of protection: chemotherapy-tested gloves (two pairs), a disposable gown made of low-permeability material, eye protection, and respiratory protection when working outside of a ventilated cabinet. Lower-risk tasks like administering an intact tablet to a patient may call for a single pair of chemotherapy-tested gloves. The standard makes clear that ordinary exam gloves are not sufficient for any hazardous drug handling.
Training and Medical Surveillance
Every person who handles hazardous drugs must receive training before they begin, with refresher training at regular intervals. The training covers safe handling techniques, proper use of protective equipment, spill management, and what to do if accidental exposure occurs.
USP 800 also calls for medical surveillance programs. These are essentially ongoing health monitoring efforts for workers who routinely handle hazardous drugs. The idea is to catch early signs of exposure-related harm, such as changes in blood counts or reproductive health, before they become serious problems. The specifics of what surveillance looks like vary by facility, but the standard expects employers to have a program in place rather than leaving it to individual workers to notice symptoms on their own.
Who Enforces It
USP itself is a standards-setting organization, not a regulatory agency. It doesn’t inspect facilities or issue fines. Enforcement comes from state boards of pharmacy, which individually decide whether and how to adopt USP 800 into their regulations. Most states now reference USP 800 in their pharmacy practice rules, though the specifics vary. Some states adopted it on the standard’s original timeline, others phased it in over several years, and a few have added their own modifications.
Accrediting bodies like The Joint Commission also look at USP 800 compliance during hospital surveys. For healthcare systems, falling short of these standards can affect accreditation status, which in turn affects reimbursement from insurers and federal programs. In practice, this makes USP 800 functionally mandatory for most facilities, even in states where formal enforcement mechanisms are still developing.
How It Relates to Other USP Chapters
USP 800 doesn’t exist in isolation. It works alongside USP 795 (non-sterile compounding) and USP 797 (sterile compounding). Think of it as an overlay: if you’re compounding a sterile hazardous drug, you need to meet the requirements of both USP 797 and USP 800 simultaneously. The hazardous drug chapter adds worker-protection requirements on top of the patient-safety standards already established in those other chapters. Where the chapters overlap, USP 800’s more protective requirement takes precedence.