The Research Institute for Tropical Medicine–National TB Reference Laboratory (RITM–NTRL), in collaboration with the Unitaid-funded and KNCV-led ASCENT DR-TB Project, successfully conducted three batches of Supplemental Training on the Simple One-Step (SOS) Stool Method for the Xpert MTB/RIF Ultra Assay between August and September 2025.
Aim
This series of trainings aimed to enhance the technical competencies and instructional capacities of regional Xpert trainers in preparation for the programmatic implementation of stool-based low-complexity nucleic acid amplification testing (LC-NAAT) for pediatric TB diagnosis in the Philippines.
A total of 18 Xpert trainers representing all regions of the country participated in the three-day, face-to-face sessions, which combined lectures, hands-on laboratory exercises, group discussions, and implementation planning workshops. Core modules covered biosafety, specimen handling, SOS method procedures, and integration of stool-based testing into regional diagnostic networks.
Training results
The results demonstrated remarkable learning gains. Average post-test scores increased from 80–85% to 95–96%, while competency assessment ratings ranged from 95–100%. Participants also rated the training “Excellent” in terms of content, objectives, and methodology.
Beyond technical learning, participants developed regional training and action plans to guide the cascade of SOS method implementation in their respective regions. These plans will support the upcoming nationwide rollout of stool-based LC-NAAT under the National TB Control Program.
By the end of the sessions, the activity successfully achieved its goals of building technical proficiency, standardizing stool-based testing practices, and strengthening collaboration among regional trainers. This initiative marks a key milestone in improving bacteriologic confirmation of TB among children, reinforcing the Department of Health’s commitment to ensure that no child with TB is left undiagnosed or untreated, a vital step in the collective journey to End TB.

