How should test article identity and stability be verified?

• A. Only labeling without identity documentation.
• B. Assuming identity based on supplier documentation.
• C. Stability data are optional.
• D. Documented identity checks, proper labeling, storage conditions, stability data, and chain of custody.

Answer: (D)

Ensuring the test article is correctly identified and remains stable throughout the study, with proper documentation and traceability, is essential for trustworthy results. Verifying identity confirms you’re using the exact material intended, preventing mix-ups that could invalidate findings. Proper labeling helps prevent mislabeling during handling and transfer. Storing under defined conditions preserves the material’s integrity so it behaves as expected when tested. Stability data show how the material holds up over time under those conditions, guarding against degradation that could skew outcomes. Chain of custody records every transfer and handling event, providing an auditable trail from receipt to use and ensuring accountability. Together, these practices minimize the risks of using the wrong material, degraded samples, and untraceable data.