Is fit-testing required for an N95 respirator?

Fit-testing is indeed mandatory for N95 respirators when they are used in healthcare settings or environments where there is a risk of exposure to airborne pathogens. This requirement is part of the Occupational Safety and Health Administration (OSHA) regulations, which stipulate that employees must be fit-tested before using a respirator to ensure that it provides an adequate seal against the face.

The necessity of fit-testing arises from the fact that an improper fit can significantly compromise the respirator's effectiveness, leading to exposure to harmful airborne contaminants. The fit-testing process assesses the fit of the respirator on the individual’s face, thus confirming that it will function as needed during use. Hence, anyone using N95 respirators as part of their personal protective equipment in environments posing exposure risks must have this testing performed, making it a mandatory safety protocol.