Table 2– Methods used to estimate the number of laboratories required, as per targets and indicators of the Global Plan to Stop TB 2006–2015

Assumptions	One AFB microscopy laboratory per 100 000 population; one culture laboratory per 5 000 000 population; one DST laboratory per 5 000 000 population
Description	Baseline number of laboratories per country was obtained from the WHO’s global TB database This number was compared with the target number set out in the global plan The difference is the number of laboratories that require new laboratory equipment for any of the three diagnostic methods Capital investment for laboratories refers only to equipment, infrastructure is not included