PMID- 20937190 OWN - NLM STAT- MEDLINE DCOM- 20110127 LR - 20211020 IS - 1815-7920 (Electronic) IS - 1027-3719 (Print) IS - 1027-3719 (Linking) VI - 14 IP - 11 DP - 2010 Nov TI - MODS accreditation process for regional reference laboratories in Peru: validation by GenoType(R) MTBDRplus. PG - 1475-80 AB - SETTING: Although considerable effort has been put into the development and evaluation of new diagnostics for tuberculosis (TB) and multidrug-resistant TB (MDR-TB), little attention has thus far been paid to the technical aspects of initiating quality-assured routine service use. For implementation of the microscopic-observation drug susceptibility (MODS) methodology in the Peruvian reference laboratory network, a laboratory accreditation process was devised; MODS results from an expert reference laboratory (Universidad Peruana Cayetano Heredia [UPCH]) were used as the standard against which implementing laboratory MODS results were judged to ensure that, prior to use for patient care, implementing laboratories achieved the same high performance with MODS as previously demonstrated in the research laboratory. OBJECTIVE: To evaluate the validity of MODS-based accreditation and the concordance of MODS drug susceptibility testing (DST) with molecular testing. DESIGN: Head-to-head comparison of MODS DST results from implementing Peruvian regional reference laboratories and the accrediting expert MODS laboratory (UPCH) with GenoType(R) MTBDRplus DST. RESULTS: The concordance of phenotypic MODS rifampicin (RMP) DST with GenoType MTBDRplus was respectively 97.4%, 97.9% and 97.1% for the two implementing regional laboratories and UPCH, and respectively 94.7%, 95.7% and 94.6% for isoniazid (INH) DST. CONCLUSION: High and consistent levels of MODS/MTBDRplus concordance for INH and RMP DST confirm the validity of the use of rapid methods as reference standards for accreditation. FAU - Coronel, J AU - Coronel J AD - Laboratorio de Investigacion de Enfermedades Infecciosas, Universidad Peruana Cayetano Heredia, Lima, Peru. FAU - Roper, M AU - Roper M FAU - Mitchell, S AU - Mitchell S FAU - Castillo, E AU - Castillo E FAU - Gamarra, N AU - Gamarra N FAU - Drobniewski, F AU - Drobniewski F FAU - Luna, G AU - Luna G FAU - Mendoza, A AU - Mendoza A FAU - Moore, D A J AU - Moore DA LA - eng GR - Wellcome Trust/United Kingdom GR - 078067/Wellcome Trust/United Kingdom GR - 078067/Z/05/Z/WT_/Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study PL - France TA - Int J Tuberc Lung Dis JT - The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease JID - 9706389 RN - 0 (Antitubercular Agents) RN - V83O1VOZ8L (Isoniazid) RN - VJT6J7R4TR (Rifampin) SB - IM MH - Accreditation/*organization & administration MH - Antitubercular Agents/pharmacology MH - Bacteriological Techniques/methods/standards MH - Humans MH - Isoniazid/pharmacology MH - Laboratories/*standards MH - Microbial Sensitivity Tests/methods/standards MH - Mycobacterium/drug effects/isolation & purification MH - Peru MH - *Quality Assurance, Health Care MH - Reference Standards MH - Rifampin/pharmacology MH - Tuberculosis/diagnosis/drug therapy/microbiology MH - Tuberculosis, Multidrug-Resistant/diagnosis/drug therapy/microbiology PMC - PMC3103710 MID - UKMS35481 OID - NLM: UKMS35481 EDAT- 2010/10/13 06:00 MHDA- 2011/01/29 06:00 PMCR- 2011/05/28 CRDT- 2010/10/13 06:00 PHST- 2010/10/13 06:00 [entrez] PHST- 2010/10/13 06:00 [pubmed] PHST- 2011/01/29 06:00 [medline] PHST- 2011/05/28 00:00 [pmc-release] PST - ppublish SO - Int J Tuberc Lung Dis. 2010 Nov;14(11):1475-80.