General Laboratory Practice, Safety, and Quality Management
Core concepts
General laboratory practice ties together the pre-analytical, analytical, and post-analytical phases through a documented quality system. Candidates should understand the quality management system (QMS) hierarchy: quality manual, standard operating procedures, work instructions, and records. Know the difference between quality control (monitoring the measurement process) and quality assurance (the broader program including audits, competency, and process improvement). Familiarize yourself with the Plan-Do-Check-Act cycle, document control, and the role of the laboratory director.
Safety essentials
Understand standard precautions, the chain of infection, and the hierarchy of controls (elimination, substitution, engineering controls, administrative controls, PPE). Know chemical hazard communication elements: safety data sheets, labeling, and the Globally Harmonized System. Recall biological spill cleanup, sharps handling, and the difference between disinfection and sterilization. Radiation, fire (fire classes and extinguisher types), and electrical safety appear as traps.
Traps in questions
- Confusing quality control with quality assurance.
- Mixing up the order of the hierarchy of controls (PPE is last, not first).
- Assuming a safety data sheet replaces a procedure.
- Forgetting that competency assessment is periodic, not one-time.
Worked rule of thumb
When a question describes an exposure event, apply the sequence: stop the exposure, remove contaminated PPE, wash the area, report, and seek medical evaluation. If asked which control to implement first, choose the one highest in the hierarchy that is feasible-engineering controls before administrative controls before PPE.
Study guidance
Map each concept to a phase of testing and to a documentation artifact. Most exam items test whether you can connect a scenario to the correct document, control level, or responsible role.