Development of a Model for Rational Laboratory Use at Sena Hospital, Phra Nakhon Si Ayutthaya.

Abstract

     This study is an action research project based on the concept of Kemmis & McTaggart, comprising four steps: planning, action, observation, and reflection. The objectives of this research were: 1) to develop a model for rational laboratory use at Sena Hospital, Phra Nakhon Si Ayutthaya 2) to compare the number of laboratory test orders and their costs before and after the model development project 3) to assess the satisfaction of healthcare professionals with rational laboratory use in the hospital. The study sample was Healthcare professionals working at Sena Hospital. Data was obtained from patient medical charts, including laboratory test results for HbA1c, LPT, LFT, TFT, and ELE. The data collection period was from January 1, 2024, to July 31, 2025. Data were analyzed using statistical software, including descriptive and inferential statistics. A significance level was set at p < 0.05.

     Results: A comparison of laboratory tests and their budgets between 2024 and 2025 revealed that following the project's implementation, the number and value of LFT, TFT, and ELE orders in 2025 decreased by 15.0%, 2.6%, and 6.5%, respectively. A screening of 4,039 people for diabetes showed a continuous increase in the percentage of patients receiving at least one HbA1c test per year, rising from 14.9% in October 2024 to 69.3%. In 2025, the percentage of repeat LPT tests within 180 days and repeat HbA1c tests within 90 days for diabetic patients were 0.6% and 7.5%, respectively, both representing a statistically significant decrease from 2024 (p<0.001). Additionally, the majority of personnel (75.0%) expressed a high level of satisfaction, with an overall average score of 38.9±3.88.