Table 2.

Interventions for peripheral diagnosis of tuberculosis (TB) likely to incur large costs in each phase of implementation

Implementation phase	Application	Example
Design phase	Interventions needing large capital outlay for design and adaptation with uncertain scale-up	Implementation of mHealth-facilitated contact investigation for TB requiring procurement and tailoring of software packages
Initiation phase	Simple interventions with low consumable costs that require changes in policy and workflow	Low-cost lateral-flow LAM assay for TB that necessitates a new supply chain, clinical algorithms, and training of personnel
Maintenance phase	Interventions that require continued infrastructure support and quality control	Molecular diagnosis of TB with equipment (e.g., Xpert MTB/RIF®) that necessitates service contracts for equipment failure and external quality assurance of test results