Exploring the Links between Quality Assurance and Laboratory Resources: An Audit-Based Study

Navjeevan Singh, Aru Panwar, Vipin Fazal Masih, Vinod K. Arora, Arati Bhatia

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


OBJECTIVE: To investigate and rectify the problems related to Ziehl-Neelsen (Z-N) staining in a cytology laboratory in the context of quality assurance. STUDY DESIGN: An audit based quality assurance study of 1,421 patients with clinical diagnoses of tubercular lymphadenopathy who underwent fine needle aspiration cytology. Data from 8 months were audited (group 1). Laboratory practices related to selection of smears for Z-N staining were studied. A 2-step corrective measure based on results of the audit was introduced for 2 months (group 2). Results were subjected to statistical analysis using the X2 test. RESULTS: Of 1,172 patients in group 1, 368 had diagnoses other than tuberculosis. Overall acid-fast bacillus (AFB) positivity was 42%. AFB positivity in 249 patients in group 2 was 89% (P <.0001). CONCLUSION: Several issues in the laboratory are linked to quality assurance. Solving everyday problems can have far-reaching benefits for the performance of laboratory personnel, resources and work flow.

Original languageEnglish (US)
Pages (from-to)960-964
Number of pages5
JournalActa Cytologica
Issue number6
StatePublished - 2003


  • Health care
  • Laboratory diagnosis
  • Medical audit
  • Quality assurance

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology


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