1 · Organizational & Governance — staffing levels, competency gaps, delegation, resource constraints.
2 · Pre-Examination & Phlebotomy — patient misidentification, labeling errors, hemolysis, uncentrifuged delays, transport problems.
3 · Analytical & Equipment — analyzer breakdowns, expired reagents, calibration drift, water quality, IQC/EQA failures.
4 · Post-Analytical & LIS — transcription errors, delayed critical-value reporting, amended reports.
5 · Biosafety & Environmental — sharps injuries, spills, laboratory-acquired infections, chemical and electrical hazards, typhoon/flood disruption.
6 · External & Referral — referral delays (Samar Provincial Hospital), specimen transit integrity, utility outages, supply-chain interruptions.