Comparator Sourcing & Procurement

How Can You Secure Reliable Comparator Supply for Global Clinical Trials?

Comparator sourcing is one of the most critical components of the clinical trial supply chain. Tanner provides strategic comparator sourcing and procurement services supporting global studies, helping sponsors and CROs mitigate shortages, manage regulatory complexity, control cost exposure, and protect study timelines.

What Makes Comparator Sourcing Challenging?

Market shortages and constrained supply

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Branded comparators, legacy therapies, biosimilars, and specialty products may be limited, market-restricted, or subject to sudden allocation changes, making early planning critical.

Inconsistent or Incomplete Documentation

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Documentation gaps can delay QP release, packaging and labeling, and site distribution, making incomplete records a common cause of clinical trial supply delays.

Regulatory Variability Across Regions

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Governed by differing national regulations, import/export constraints, and GDP and broader GxP requirements that vary by geography, meaning a sourcing strategy effective in one country may not translate to another.

Protocol Complexity & Late Changes

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Adaptive designs, new cohorts, dosing changes, or geographic expansion can trigger sudden increases in demand, new sourcing requirements and urgent resupply needs, amplifying risk if sourcing strategies are not already in place.

Parallel Trade & Supply Integrity Risk

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Products sourced through parallel markets can introduce traceability gaps, variability in packaging and labeling and increased audit exposure, putting Chain of Custody and study integrity at risk.

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Why Early Engagement Matters

Comparator sourcing issues rarely occur in isolation. They can cascade across the clinical trial supply chain, impacting timelines, cost control, compliance exposure and overall study continuity.

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Our Capabilities

Sourcing Strategy & Global Access

Procurement & Supplier Governance

Documentation & Risk Management

How We Deliver Clinical Trial Solutions

Explore real-world examples of how we navigate regulatory, geographic and supply complexities to deliver compliant, global access to essential therapies.

View all Case Studies

Start Planning Your Comparator Sourcing Strategy