Journal of
Medical Laboratory and Diagnosis

  • Abbreviation: J. Med. Lab. Diagn.
  • Language: English
  • ISSN: 2141-2618
  • DOI: 10.5897/JMLD
  • Start Year: 2010
  • Published Articles: 55

Full Length Research Paper

Quality analysis of the preanalytical phase of laboratory tests: Case of the civil hospital (Tetouan–Morocco)

Chemao-Elfihri, Wafa
  • Chemao-Elfihri, Wafa
  • National School of Public Health. Av. Lamfadel Cherkaoui Al Irfane city, Rabat, Morocco.
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Moussaoui M.
  • Moussaoui M.
  • National School of Public Health. Av. Lamfadel Cherkaoui Al Irfane city, Rabat, Morocco.
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Firsiwi K.
  • Firsiwi K.
  • Laboratory of Civil Hospital. Tetouan, Morocco.
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Jbari B.
  • Jbari B.
  • Ministry of Health, Tetouan, Morocco.
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El Morhit M.
  • El Morhit M.
  • Laboratory of Microbiology, Research Team Health, Water and Environment, Faculty of Medicine and Pharmacy, University of Mohammed-V, Rabat, Morocco.
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  •  Received: 27 May 2016
  •  Accepted: 22 August 2016
  •  Published: 31 January 2017


Several studies report that between 60 to 85% of laboratory errors are produced during the preanalytical phase. The objective of this study was to identify the factors at the origin of nonconformities during this phase at the Civil Hospital of Tetouan. A mixed preanalytical descriptive study realized between April and May 2014 was based on a questionnaire, an observation grid, focus groups and semi-structured interviews. The quality of preanalytical phase determines the quality and reliability of laboratory results. Indeed, 30% of the prescriptions of biologic tests are drafted by nurses and not doctors this is in the absence of an updated list of exams. The samples are taken at 84.6% by unqualified personnel and 98% without any guide or manual. For the traceability aspect, the name of the sampler is never placed on the sheet of examination, age, sex of the patient; time and nature of the sample are often not mentioned in the label vials of samples. The factors causing nonconformities laboratory tests at the civil hospital may have an impact on the quality of care. They result from a major defect of coordination between the laboratory and the services and the weak competence of the staff involved in this process.

Key words: Nonconformities, quality, biological sample, preanalytical phase, hospital laboratory.