Poor documentation does not simply create gaps in the record. It undermines the entire evidentiary foundation of clinical research. A blood pressure reading scribbled on a paper towel and transcribed hours later is not equivalent to one recorded contemporaneously in the source record. A signature obtained but undated cannot prove when consent was given. Data entered by someone other than the person who collected it cannot be attributed with certainty.

Section 2.12 of ICH E6(R3) Annex 1 establishes the standards that distinguish reliable records from unreliable ones. These are not bureaucratic requirements invented to burden investigators. They are the minimum conditions necessary for trial data to support regulatory decisions about whether a medicine is safe and effective. Every participant who volunteers for research deserves to know their data will be captured with sufficient rigor that their contribution actually matters.

This lesson examines what makes clinical trial documentation trustworthy: the E6(R3) concept of source records (which consolidates the earlier E6(R2) terms "source data" and "source documents"), the data integrity principles, and the retention requirements that ensure records remain accessible for years or decades after the trial concludes.

Poor documentation does not simply create gaps in the record. It undermines the entire evidentiary foundation of clinical research. A blood pressure reading scribbled on a paper towel and transcribed hours later is not equivalent to one recorded contemporaneously in the source record. A signature obtained but undated cannot prove when consent was given. Data entered by someone other than the person who collected it cannot be attributed with certainty.

Section 2.12 of ICH E6(R3) Annex 1 establishes the standards that distinguish reliable records from unreliable ones. These are not bureaucratic requirements invented to burden investigators. They are the minimum conditions necessary for trial data to support regulatory decisions about whether a medicine is safe and effective. Every participant who volunteers for research deserves to know their data will be captured with sufficient rigor that their contribution actually matters.

This lesson examines what makes clinical trial documentation trustworthy: the E6(R3) concept of source records (which consolidates the earlier E6(R2) terms "source data" and "source documents"), the data integrity principles, and the retention requirements that ensure records remain accessible for years or decades after the trial concludes.