Extractables & Leachables: From Hidden Risk to Controlled Confidence

In pharmaceutical development, some of the most critical risks are not immediately visible. 

They do not originate from the drug substance itself, but from the materials surrounding it. Packaging, tubing, seals, and manufacturing components can introduce chemical compounds into a product over time. These are known as extractables and leachables, and they sit at the intersection of product quality, patient safety, and regulatory compliance. 
 
Understanding and controlling them is no longer optional. It is essential. 

What Are Extractables and Leachables? 

Extractables are chemical compounds that can be released from materials under aggressive laboratory conditions. These studies are designed to identify potential risks and build a comprehensive chemical profile of materials. 
 
Leachables are compounds that actually migrate into the drug product under real-world conditions during manufacturing, storage, or use. 
 
This distinction is critical. Extractables define what could happen. Leachables confirm what is happening. 

Why This Matters More Than Ever 

As pharmaceutical products become more complex, so do their delivery systems. From pre-filled syringes to advanced biologics, the interaction between product and packaging has become a key risk factor. 
 
If not properly managed, E&L risks can lead to: 
- Product contamination 
- Stability challenges 
- Regulatory delays 
- Patient safety concerns 
 
Regulatory expectations now require a science-based, risk-driven approach, rather than isolated or reactive testing. 

Moving Beyond Testing to Strategy 

A common misconception is that extractables and leachables studies are standalone activities. They are part of a broader quality and development strategy. 
 
Effective E&L programs should: 
- Begin early in the development lifecycle 
- Be tailored to product formulation and packaging materials 
- Use targeted analytical methods to identify and quantify compounds 
- Include toxicological risk assessments to evaluate safety impact 
 
This requires more than testing capability. It requires integration across analytical science, toxicology, and regulatory expertise. 

Turning Data Into Decisions 

The value of extractables and leachables studies lies not just in generating data, but in interpreting it with confidence. 
 
From identifying unknown compounds to assessing their toxicological relevance, this process relies on: 
- Advanced analytical techniques such as GC-MS and LC-MS 
- Deep understanding of material interactions 
- Alignment with global regulatory expectations 
 
Without this level of integration, data alone cannot support confident decision-making. 

How Intertek Supports Your E&L Strategy 

Intertek provides a comprehensive, end-to-end approach to extractables and leachables, supporting pharmaceutical and biopharmaceutical companies across the full product lifecycle. 
 
Integrated Study Design 
Customized E&L strategies aligned with your product, packaging system, and regulatory pathway. 
 
Advanced Analytical Capabilities 
State-of-the-art instrumentation to detect, identify, and quantify compounds with precision. 
 
Toxicological Risk Assessment 
Expert evaluation to determine safety impact and establish acceptable limits. 
 
Regulatory Alignment 
Support designed to meet global expectations and facilitate regulatory submissions. 
 
Lifecycle Support 
From early development through commercialization, ensuring consistency, control, and confidence. 
 
Learn more: https://www.intertek.com/pharmaceutical/analysis/extractables-leachables/ 

From Unknowns to Assurance 

Extractables and leachables may start as unknowns, but with the right strategy, they become controlled variables. 
 
In pharmaceutical development, confidence comes from understanding complexity and managing it with precision.