Analyzing dosage and exposure data for a pharmaceutical product
Pharmaceutical Service

Exposure Assessment

Quantifying how patients are actually exposed to a substance — the real-world numbers every safety margin depends on.

What is Exposure Assessment?

Exposure Assessment quantifies the extent and route by which patients or users are exposed to a pharmaceutical substance or impurity, taking into account dosage, frequency, duration of treatment, and route of administration — oral, dermal, inhalation, and more.

This step establishes the real-world exposure levels that will be compared against toxicological thresholds to determine safety margins.

Pharmaceutical dosage forms representing patient exposure routes
Why it matters

Real-world numbers, not worst-case guesses.

  • Accounts for actual dosage, frequency, and duration of treatment.
  • Considers route of administration — oral, dermal, inhalation — since exposure risk varies by route.
  • Provides the exposure side of every Toxicological Risk Assessment.
  • Establishes the safety margin regulators expect to see justified.
What's included

Methodologies we apply

Dosage & Frequency Modeling

Quantifying real-world treatment patterns.

Route-of-Administration Analysis

Assessing exposure risk by oral, dermal, or inhalation routes.

Patient Population Review

Accounting for the specific population using the product.

Safety Margin Calculation

Comparing exposure levels against toxicological thresholds.

Standards we align to
ICH M7 ICH Q3A/B/C/D FDA Guidance EMA Guidance
How we assess it

Our process for Exposure Assessment

1

Gather Dosing Data

Collecting dosage, frequency, and treatment duration information.

2

Model Exposure Scenarios

Real-world exposure is modeled by route of administration.

3

Compare Against Thresholds

Exposure levels are compared against toxicological thresholds.

4

Report Safety Margins

A documented safety margin conclusion is delivered.

The deliverable

What you receive

Quantified real-world exposure levels for your patient population.

A clear safety margin calculation against toxicological thresholds.

Documentation ready to support your Toxicological Risk Assessment.

Direct access to the assessment team for follow-up questions.

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