Which raw data source requires transcription and verification by the creator to be GLP-compliant?

• A. A voice recording
• B. A photo
• C. A handwritten data entry
• D. All of the above

Answer: (A)

In GLP, raw data must be an original, auditable record that can be traced back to its source. When data come as a voice recording, it isn’t easily readable or analyzable in text form, so creating a transcription provides a textual record that others can review and audit. The transcription must be verified by the creator to ensure it accurately reflects what was spoken, preserving integrity and traceability. This combination—transcription plus creator verification—makes the data compliant with GLP’s requirements for verifiability and auditability. Photos and handwritten entries are already in visual or textual form and don’t require the same transcription step by the creator, so they don’t fit this specific requirement.