United States
Hong KongFDA recall classes
Class I means a reasonable probability of serious adverse health consequences or death. Class II means temporary or medically reversible consequences, or a remote probability of serious ones. Class III means harm is not likely. 21 CFR 7.3.
Three definitions, published verbatim in federal regulation, and worth learning close to word for word because the distractors are near-misses of the real wording.
The three classes
| Class | The situation |
|---|---|
| I | A reasonable probability that use of, or exposure to, a violative product will cause serious adverse health consequences or death |
| II | Use may cause temporary or medically reversible adverse health consequences, or the probability of serious consequences is remote |
| III | Use is not likely to cause adverse health consequences |
All three are defined at 21 CFR 7.3.
Most candidates learn Class II as "temporary or reversible harm" and stop. The definition also covers the case where serious harm is possible but remote, and questions are written to that second limb precisely because it is the half people skip.
The ordering is severity, not size
A class describes how dangerous the defect is, not how many units are affected or how widely they were distributed.
A nationwide recall of a product that will not hurt anyone is Class III. A small recall of something that could kill is Class I.
Related terms worth separating
- A market withdrawal involves a minor violation not subject to FDA legal action, or no violation at all
- A stock recovery concerns product that has not left the manufacturer's control
- A recall is a firm's removal or correction of a marketed product
Those distinctions are in the same part of the regulation and they make good distractors, so learn them alongside the classes rather than afterwards.
What the technician does
Recall handling in the pharmacy is a procedural question: identify affected stock by lot number, quarantine it, follow the notice, and document. The class tells you the urgency.
Common questions
What are the FDA recall classes?
Class I, II and III, defined at 21 CFR 7.3 and graded by potential harm.
What is a Class I recall?
A reasonable probability that use will cause serious adverse health consequences or death.
What does Class II cover?
Temporary or medically reversible consequences, or a remote probability of serious ones.
Does the class depend on how many units are affected?
No. It grades the severity of the hazard, not the size of the recall.
What is a market withdrawal?
Removal involving a minor violation not subject to FDA legal action, or no violation at all.