Urgessa, Fekadu(MSC, Assistant professor, PHD fellow)Sisay, Abay (MSC, PHD fellow)Mulu, Tilanesh2021-04-132023-11-062021-04-132023-11-062020-11http://etd.aau.edu.et/handle/123456789/26110Background: Medical laboratory service is very essential for sustainable and reliable patient diagnosis and treatment. Interruption is a global problem and much higher in resource limited settings. However, there is no adequate evidence on the magnitude and contributed factors. Thus, this study aimed to assess the laboratory service interruption and its associated factors in public hospitals found in Addis Ababa, Ethiopia. Methods: Facility based cross sectional study design was conducted in public hospitals found in Addis Ababa using qualitative and quantitative data from April-June/ 2020in Ethiopia. Standardized check list was developed to assess level of interruption and also structured dichotomous questioners’ were used for related factors. Data was entered and analyzed using SPSS version 23. Binary and multiple logistic regression analysis were used to explanatory factor that affect the outcome variable. Result: Totally 190 laboratory professionals were participated with a response rate of 95.5%. In public hospitals averagely 17(23%) tests were interrupted for 76(84%) days. In specialized and General hospitals averagely 13(17%) and 19(28%) tests were interrupted, respectively. In this study serology and hematology tests accounts the highest level of interruption which is 5(6.9%) and 4(5.5%) respectively. While parasitological, urinalysis and body fluid analysis were consistently available. Absence of laboratory annual plan at [AOR=3.028, pvalue=0.044, 95%Cl (1.030-8.903], inappropriate equipment maintenance at [AOR=9.350, pvalue=0.003, 95%Cl (2.102-41.596], and shortage of reagents and supplies at [AOR=3.845, pvalue=0.049, 95%Cl (1.008-14.663] were the major factors that affect laboratory service interruption. Conclusion: Even though sustainable laboratory service is important in the health care service, most public hospital laboratories found in Addis Ababa did not provide continuous diagnostic service for all expected tests. Therefore, to improve service interruption, hospital managers, health professionals and other stakeholders should undertake effort to intervene the factors that affect laboratory service interruption.en-USLaboratory, service, interruption, EthiopiaThesis