Proficiency testing in parasitology. An educational tool to improve laboratory performance

Area of Science:

• Medical laboratory science
• Parasitology
• Public health surveillance

Background:

• The Laboratory Proficiency Testing Program (LPTP) was established in 1977 to assess medical laboratories testing for gastrointestinal parasites.
• The program has operated with minimal changes for 17 years, involving annual surveys of licensed laboratories in Ontario.

Purpose of the Study:

• To evaluate the performance trends of medical laboratories in Ontario conducting gastrointestinal parasite testing over a 17-year period.
• To identify factors contributing to improvements in laboratory performance.

Main Methods:

• Mandatory annual distribution of four surveys, each with four samples, to all licensed medical laboratories in Ontario.
• Monitoring of laboratory performance based on survey results over 17 years (1977-1994).

Main Results:

• A significant and remarkable improvement in overall laboratory performance was observed during the study period.
• Laboratory performance enhancement is attributed to a combination of factors, including the voluntary exit of poorly performing laboratories and the improved capabilities of others.

Conclusions:

• The Laboratory Proficiency Testing Program has successfully driven improvements in diagnostic accuracy for gastrointestinal parasites.
• The Parasitology Committee's educational services played a crucial role in enhancing laboratory performance and ensuring reliable diagnostic testing.