Session Description:This session will review the chemical characterization draft guidance and chemicals list for analytical performance (CLAP). The draft guidance clarifies Part 18 chemical characterization including extraction, identification of analytes, and method suitability. The CLAP affects determining uncertainty factors, key experimental parameters for determining analytical evaluation thresholds. Understanding these changes will be essential in successful future studies.
Learning Objective:
Understand the context of FDA draft guidance and the CLAP
Review major points of clarification in the draft guidance
Understand potential impact of changes on the chemical characterization process
Session Description: This presentation will discuss a least burdensome approach for evaluating biocompatibility of changes to released medical devices per ISO/DIS 10993-1:2024. The authors will discuss strategy for biocompatibility evaluations of released products while managing test complexity, cost, and timeline, with an emphasis on reducing animal testing by leveraging biological equivalence. Appropriate test method selection will be discussed in detail, as it is a crucial step in generating quality data and meaningful project outcomes.
Learning Objective: Participants will learn about essential considerations when establishing biological equivalence for changes to medical devices. Relevant test methods suitable for surface and chemical characterization will be discussed with an emphasis on the importance of system suitability, sensitivity, and acceptance criteria. Lessons learned from this developing approach will be discussed, including case studies and risk management strategies.
Authors:
Catherine D. Christensen, Medtronic plc, Minneapolis, MN
Whitney V. Christian, Medtronic plc, Jacksonville, FL
Steven R. Doonan, Ph.D, Eurofins EAG Laboratories, St. Louis, MO
These sessions are Exhibitor-Hosted Sessions. Although not an official part of the SOT Annual Meeting scientific program, its presentation is permitted by the Society.
November 11, 2025
We’re excited to share that Dr. Gideon Bartov, one of EAG Laboratories’ leading experts in materials purity analysis, will join the panel for “How Pure is Pure? The Future of Purity Testing in Australia” on November 11, 2025.
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