Published in Life Science Leader.
"Almost two years ago, the FDA issued a draft guidance document "letting us off the hook" from what had been standard practice in most registrational clinical trials: source document verification, the procedure commonly called "100% of 100%", or in layman's terms, a complete verification of every data point for every patient in every clinical trial where data is included to support approval.
Source document verification (SDV) requires significant resources in terms of time and cost. It tends to be the key activity of CRAs or monitors during routine site visits, although there is widespread agreement it should be only part of a monitor's focus to ensure a high performing site. Reducing the practice to a quantitative risk-based model would free up the monitor's time so that s/he may more effectively manage the activities that often cause a research site to veer off track from a regulatory perspective."