Table 2. Baseline laboratory capacity for diagnosis of tuberculosis, Peru, 1996–2000*.

Activity	Validation or quality control procedures	No. establishments	No. performed/year
Smear microscopy	Quality control of all AFB+ and 10% of AFB– results each trimester at regional level of laboratories	987	1,164,198
Mycobacterial culture	Once a year, quality control of media culture	57	48,346
Drug susceptibility testing	External quality control in INPPAZ	1	1,045

*AFB, acid-fast bacilli; INPPAZ, Instituto Panamericano de Protección de Alimentos y Zoonosis.