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Step 2.1 Estimating Exposure Doses

Exposure Dose Types

An exposure dose is an estimate of the amount of a chemical that enters a person's body when the person comes in contact with the chemical. To view the three types of exposures that are considered in a toxicologic evaluation, click on the three entries below.

Exposure 1

Inhalation (breathing air that contains the chemical)

Exposure 2

Ingestion (eating or drinking something that contains the chemical)

Exposure 3

Dermal contact (skin contact with the chemical)

Estimating exposure doses

In conducting a toxicologic evaluation, the health assessor's first step is to estimate the exposure doses. An exposure dose is estimated for each way that people actually come in contact with a chemical.

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