Assessment of Microbiology Laboratory Quality Systems in State-Owned Hospitals Across Osun and Ekiti States

Laboratory quality systems are fundamental to the reliability of microbiological diagnoses that guide clinical treatment decisions in Nigerian state-owned hospitals, yet their implementation across public sector facilities in South West Nigeria is inadequately documented. This study assesses microbiology laboratory quality systems at 12 state-owned hospitals in Osun and Ekiti States, using the WHO-AFRO Stepwise Laboratory Quality Improvement Process Towards Accreditation (SLIPTA) checklist as the evaluation tool. On-site assessments were conducted by trained laboratory assessors, covering quality management, personnel competency, equipment maintenance, sample management, test method validation, and biosafety. A composite quality score was computed for each laboratory. Only two of 12 laboratories achieved a quality level qualifying for SLIPTA star rating. Scores ranged from 28 to 56 percent of maximum points, with persistent deficits in quality documentation, equipment calibration records, and proficiency testing participation. Culture media quality control documentation was absent in 75 percent of laboratories. Antibiotic susceptibility testing quality controls were inconsistently performed. Professional recommendations include mandatory SLIPTA enrolment for all state hospital microbiology laboratories, state government funding for equipment calibration contracts, and regional external quality assurance scheme participation coordinated through MLSCN. Keywords: laboratory quality, SLIPTA, microbiology, Osun State, Ekiti State