Which item is a vendor responsibility in antibody validation requirements?

• A. Providing Data sheet and usage instructions for use.
• B. Providing on-site installation.
• C. Training end users in lab technique.
• D. Providing long-term warranties.

Answer: (A)

Providing data sheets and usage instructions for use is the vendor responsibility. These documents give the essential information needed to apply the antibody correctly and plan validation activities, including the recommended applications (such as IHC), species reactivity, validated dilutions, antigen retrieval conditions, detection methods, storage and handling, and any known limitations. Having this documentation lets a lab design a proper validation plan, select appropriate controls, set clear acceptance criteria, and record how the antibody performs in their specific assay and tissue type. The other options—on-site installation, training end users, and long-term warranties—are not part of antibody validation requirements.