Laboratory Administration
Laboratory administration items test the management side of practice: quality systems, regulatory structure, method validation, quality control oversight, staffing and budgeting, and safety compliance. Questions are usually situational, asking what a supervisor should do next or which metric justifies a decision.
Quality systems and regulation
- Quality control monitors each run; quality assurance monitors the whole process; quality improvement uses data to change practice.
- External quality assessment (proficiency testing) compares your results with peer laboratories and is required for regulated analytes; failure triggers investigation and corrective action, not a quiet repeat.
- CLIA categorizes tests as waived, moderate, or high complexity. Waived testing carries minimal requirements; moderate and high complexity testing require a CLIA certificate, qualified personnel, and documented competency assessment.
- Accrediting bodies such as CAP and The Joint Commission apply standards above the CLIA minimums. OSHA governs bloodborne pathogens, hazard communication, and the chemical hygiene plan.
Method validation and documentation
- Before reporting patient results on a new method, establish accuracy by comparison, precision by replication, reportable range, analyte-specific reference intervals, and interference limits, using CLSI protocols.
- New reagent lots and calibration changes require verification before use.
- Document control ensures only current procedures are in use; corrective action records must show the problem, the root cause, the action taken, and the effectiveness check.
Operations and finance
- Turnaround time should be tracked by phase: order to collection, collection to receipt, receipt to result, result to report. Fix the largest contributor first.
- Productivity is measured as tests or worked minutes per paid hour; the FTE budget must include nonproductive time such as vacation, holidays and sick leave.
- Inventory uses par levels and first-in, first-out rotation; reagent stability and expiration drive ordering quantities.
- Lean tools remove waste; root cause analysis and failure mode analysis prevent recurrence.
Worked example
A laboratory performs 300,000 tests per year with an average of 2.5 minutes of technical time per test. Total technical minutes = 750,000, or 12,500 hours. Paid hours per FTE are 2,080; subtract 120 hours vacation, 64 hours holidays and 40 hours sick leave, leaving 1,856 productive hours. FTEs required = 12,500 / 1,856 = 6.7. Reasoning: the calculation must use productive hours, because budgeting on 2,080 hours per person underestimates staffing need and produces chronic shortfalls.
Traps that cost marks
- Budgeting FTEs using paid rather than productive hours.
- Treating a proficiency testing failure as a statistical nuisance rather than a quality system event.
- Validating a method with precision data alone and claiming accuracy.
- Allowing expired reagents because the control still passed.