Fig. 1. Representative images, captured by the KU-F40 system, of the organisms identified differently by the FECT system. (A) Metagonimus yokogawai (FECT) vs. Clonorchis sinensis (KU-F40); (B) Trichuris trichiura (FECT) vs. Ascaris lumbricoides (KU-F40); (C) Entamoeba histolytica (FECT) vs. Blastocystis hominis (KU-F40); (D) Entamoeba histolytica (FECT) vs. Entamoeba coli (KU-F40); (E) Not detected (FECT) vs. Clonorchis sinensis (KU-F40). Images (A), (B), and (E) were captured using a 20× objective lens, while images (C) and (D) were captured using a 40× objective lens. FECT, formalin–ether concentration technique.
Ann Clin Microbiol 2025;29(2):6. Performance of an AI-based automated feces analyzer compared with the formalin-ether concentration technique for intestinal parasite detection: a diagnostic accuracy study Download image
Table 3. Workflow and technical characteristics of FECT and the KU-F40 systems
Ann Clin Microbiol 2025;29(2):6. Performance of an AI-based automated feces analyzer compared with the formalin-ether concentration technique for intestinal parasite detection: a diagnostic accuracy study Download table Category FECT KU-F40 system Analysis method Manual microscopic examination Automated image analysis Operation mode Manual Automated System configuration Open system Closed system Chemical exposure Frequent (Formalin, ethyl acetate) […]
Table 2. Parasitic species identification using FECT and the KU-F40 system
Ann Clin Microbiol 2025;29(2):6. Performance of an AI-based automated feces analyzer compared with the formalin-ether concentration technique for intestinal parasite detection: a diagnostic accuracy study Download table Concordance Species identification No. of cases FECT KU-F40 system Concordant Endolimax nana 3 Clonorchis sinensis 2 Entamoeba coli 1 Discordant Metagonimus yokogawai Clonorchis sinensis (Fig. 1A) […]
Table 1. Diagnostic performance of the KU-F40 system, using FECT as the reference method
Ann Clin Microbiol 2025;29(2):6. Performance of an AI-based automated feces analyzer compared with the formalin-ether concentration technique for intestinal parasite detection: a diagnostic accuracy study Download table KU-F40 system Positive Negative Total FECT Positive 12 9 21 Negative 6 984 990 Total 18 993 1,011 Accuracy: 98.5% (95% CI, 97.5–99.2) Sensitivity: 57.1% (95% CI, 34.0–78.2) […]
Performance of an AI-based automated feces analyzer compared with the formalin-ether concentration technique for intestinal parasite detection: a diagnostic accuracy study
Original article Hui-Jin Yu1, Tae Yeul Kim2, Eun Jeong Won3, Hee Jae Huh2,4 1Department of Laboratory Medicine, Seoul Medical Center, Seoul, Korea2Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea3Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea4Department of Medical Device Management […]