Figure 8-2-3 Mistake-Proofing the Design of Health Care Processes - Figure 8.2. Laboratory instruments in the lab read the bar coding on specimen tubes to ensure positive identification of people and proceduresReturn to Document Figure 8.3. The bar codes are laid out on the wall in close proximity, a design that is inattentive to human factors considerationsReturn to Document Current as of May 2007 Internet Citation: Figure 8-2-3: Mistake-Proofing the Design of Health Care Processes -. May 2007. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patient-safety-resources/resources/mistakeproof/mistakefig8-2-3.html