RISK ASSESSMENT EXPERTS

Risk Assessment & PDE/OEL Studies

Our scientific risk assessment services provide the data-driven foundation for your validation and safety strategies. We specialize in Permitted Daily Exposure (PDE) calculations, Occupational Exposure Limits (OEL), and comprehensive impurity profiling to ensure patient safety and regulatory compliance (ICH Q3D, ICH M7).

Toxicological Risk Assessments (TRA)

Our scientific risk assessment services provide the data-driven foundation for your validation and safety strategies. We specialize in Permitted Daily Exposure (PDE) calculations, Occupational Exposure Limits (OEL), and comprehensive impurity profiling to ensure patient safety and regulatory compliance (ICH Q3D, ICH M7).

Our Risk Assessment Services

Comprehensive Risk Assessments

Systematic identification, analysis, and evaluation of potential risks throughout pharmaceutical product development and manufacturing processes.

Critical Analysis

Permitted Daily Exposure (PDE) Evaluation

Determination of acceptable daily exposure limits for pharmaceutical ingredients and impurities based on toxicological data and regulatory guidelines.

Detailed Calculation

Occupational Exposure Limits (OEL) Determination

Establishment of safe exposure limits for pharmaceutical compounds in workplace environments to protect employee health and safety.

Safety Focus

Cross-Contamination Control Strategy

Evaluation of potential cross-contamination risks in shared facilities.

High Priority

Nitroso Impurity Assessment

Comprehensive assessment of nitrosamine and nitroso impurities in pharmaceutical products, including risk evaluation and mitigation strategies.

Regulatory Focus

Control Strategy Development

Development of comprehensive control strategies for impurities including specification setting, analytical method selection, and monitoring plans.

Proactive Approach

Our Risk Assessment Methodology

Hazard Identification

Systematic identification of potential hazards and impurities in pharmaceutical products

Risk Analysis

Quantitative and qualitative analysis of identified risks using scientific data and regulatory guidelines

Risk Evaluation

Evaluation of risk significance and determination of appropriate control measures

Control Implementation

Development and implementation of risk control strategies and monitoring programs

Regulatory Standards & Guidelines

PDE & OEL Determination

Calculation of health-based exposure limits (HBELs) for cleaning validation and worker safety. View our specialized PDE Calculation Reports.

FDA Requirements

FDA guidance on genotoxic and carcinogenic impurities, nitrosamine impurities control

EMA Standards

EMA guidelines on limits for genotoxic impurities, nitrosamine risk assessment

Nitrosamine & Elemental Impurity Profiling

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Final Report

Comprehensive report including PDE/OEL values, references, and expert statement

Frequently Asked Questions

What is the difference between PDE and OEL?

PDE (Permitted Daily Exposure) is the maximum acceptable intake of a substance for a patient, while OEL (Occupational Exposure Limit) determines the safe exposure level for workers during manufacturing.

Is OEL required for dedicated facilities?

Yes, OEL determination is mandatory for worker safety assessments (COSHH) regardless of facility dedication, though cross-contamination risk (PDE) might be lower.

Do you provide Nitrosamine Risk Assessment?

Yes, we conduct comprehensive Nitrosamine Risk Assessments in compliance with FDA and EMA requirements, evaluating raw materials, packaging, and manufacturing processes.

Are your reports accepted by SFDA?

Yes, our risk assessment reports for PDE, OEL, and elemental impurities are prepared according to ICH guidelines and are fully accepted by SFDA, EDA, and other regulatory bodies.

How do you assess Genotoxic Impurities?

We follow ICH M7 guidelines, using computational toxicology (QSAR) and database searches to classify impurities and determine appropriate control limits.

Service Details

Impurity Types Covered

  • Genotoxic impurities
  • Nitrosamine impurities
  • Elemental impurities
  • Residual solvents
  • Process-related impurities

Key Deliverables

Comprehensive risk assessment reports
PDE/OEL calculations and justifications
Impurity control strategies
Regulatory submission support

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