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ERA, PDE and OEL assessments all use scientific evidence, but they answer different questions. Keeping the three concepts distinct helps avoid using the wrong assessment framework for a regulatory or workplace decision.
ERA evaluates the potential environmental risk arising from the use of a medicinal product. It focuses on environmental exposure, fate, effects and risk characterisation under the applicable regulatory guideline.
PDE / ADE is a health-based daily exposure threshold used in pharmaceutical risk identification and related applications. Its derivation is based on pharmacological and toxicological evidence and a structured health-based-limit methodology.
OEL is an occupational exposure concept focused on airborne workplace exposure. OEB/OHC banding is a related but distinct approach that categorises substances to support exposure control.
An ERA does not establish a workplace OEL; a PDE is not automatically an airborne OEL; and an OEL does not replace an environmental risk assessment. A project should start by identifying the exposure question and regulatory purpose.
Share the substance, product context, intended market and regulatory requirement. ToxWriter can review the scope and confirm the appropriate assessment pathway.