A diagnostic laboratory is a chain of custody with a reputation attached. A doctor orders a test, a phlebotomist draws a sample, an analyser produces a number, a pathologist signs it out — and if any link runs on paper, that is precisely where the sample gets lost, the result gets transcribed wrong, or a clinician waits on a report that was ready an hour ago. Roughly two-thirds of laboratory errors happen before the sample even reaches the bench. A proper laboratory management system is where a lab earns its accreditation and its trust.