scholarly journals Decentralization of Acid Fast Bacilli(AFB) External Quality Assurance Using Blind Rechecking for Sputum Smear Microscopy in Ethiopia

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0151366 ◽  
Author(s):  
Muluken Melese ◽  
Degu Jerene ◽  
Genetu Alem ◽  
Jemal Seid ◽  
Feleke Belachew ◽  
...  
Keyword(s):  
Quality Assurance ◽  
External Quality Assurance ◽  
Sputum Smear ◽  
Smear Microscopy ◽  
Sputum Smear Microscopy ◽  
External Quality ◽  
Acid Fast Bacilli

scholarly journals Panel Testing Of Sputum Smear Microscopy Of National Tuberculosis Reference Laboratories In Saarc Region: 2003-2010

1970 ◽  
Vol 8 (1) ◽  
pp. 31-35
Author(s):  
KK Jha ◽  
B Thapa ◽  
VS Salhotra ◽  
NK Afridi
Keyword(s):  
Quality Assurance ◽  
External Quality Assurance ◽  
Sputum Smear ◽  
Smear Microscopy ◽  
Sputum Smear Microscopy ◽  
Percentage Agreement ◽  
External Quality ◽  
Member States ◽  
Panel Testing ◽  
Laboratory Network

Introduction: Quality assured sputum smear microscopy is a priority for Tuberculosis Control Programme to be successful to meet the global TB targets of 70% case detection and 85% treatment success rate. The SAARC TB Reference Laboratory has been conducting Panel Testing under External Quality Assurance Sputum Smear Microscopy for National TB Reference Laboratories of SAARC Member States to strengthen the Sputum Smear Microscopy. The study aims to review and analyse the Panel Testing for National Reference Laboratories of SAARC Member States. Methodology: The reports of seven rounds (2003-2010) of Panel Tests were collected and data from these reports was compiled and analysed. Results: Seven rounds of Panel Testing in the region have been completed since 2003 and ten TB Reference Laboratories within eight Member States participated. Afghanistan has been participating since 2007. Seven hundred and seventy-eight panel test slides were dispatched to and read by the participating laboratories and percentage agreement was 98.07%. Percentage agreement of individual participating laboratories varied from 87.50 to 100%. Fourteen minor errors and one major error (high false positive) were also observed with sensitivity and specifi city ranging from 90.90 to 100% and 83.33 to 100%, respectively. Conclusion: Panel Testing within the SAARC TB Laboratory network is extremely doing well. The success of TB control programmes in the SAARC Member States is refl ected by the excellent Panel Testing within the SAARC TB Laboratory Network. Continuation and improvement of External Quality Assurance of Sputum Smear Microscopy, introduction of External Quality Assurance of culture & drug susceptibility testing along with the introduction of recent diagnostic tests within the region is necessary to fi ght against TB. DOI: http://dx.doi.org/10.3126/saarctb.v8i1.5889 SAARCTB 2011; 8(1): 31-35

Tuberculosis laboratory network and quality assurance of sputum smear microscopy in laboratories in Papua New Guinea

Pathology ◽  
2009 ◽  
Vol 41 ◽  
pp. 87
Author(s):  
Oscillah Kaminiel ◽  
Evelyn Lavu ◽  
Apeo Manoni ◽  
Saul Pembu ◽  
Janlyn Kumbu ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Papua New Guinea ◽  
New Guinea ◽  
Sputum Smear ◽  
Smear Microscopy ◽  
Sputum Smear Microscopy ◽  
Laboratory Network

scholarly journals Lot Quality Assurance Sampling of Sputum Acid-Fast Bacillus Smears for Assessing Sputum Smear Microscopy Centers

2005 ◽  
Vol 43 (2) ◽  
pp. 913-915 ◽  
Author(s):  
N. Selvakumar ◽  
B. N. Murthy ◽  
E. Prabhakaran ◽  
S. Sivagamasundari ◽  
S. Vasanthan ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Acid Fast Bacillus ◽  
Sputum Smear ◽  
Smear Microscopy ◽  
Sputum Smear Microscopy ◽  
Lot Quality Assurance Sampling

scholarly journals External Quality Assessment of Sputum Smear Microscopy in Tuberculosis Laboratories in Sughd, Tajikistan

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Eva Chang ◽  
Fabio Luelmo ◽  
Zamira Baydulloeva ◽  
Marija Joncevska ◽  
Guljamol Kasymova ◽  
...  
Keyword(s):  
Quality Assessment ◽  
False Positive ◽  
External Quality Assessment ◽  
False Negative ◽  
Secondary Data ◽  
Sputum Smear ◽  
Smear Microscopy ◽  
Sputum Smear Microscopy ◽  
External Quality ◽  
Cross Sectional

Introduction: Tajikistan has a laboratory network with three levels of tuberculosis (TB) laboratories. The external quality assessment (EQA) of sputum smear microscopy was implemented in 2007. The objective of this study was to evaluate the EQA system and identify potential performance improvement strategies in TB microscopic laboratories in Sughd, Tajikistan.Methods: This is a cross-sectional study based on retrospective record review and secondary data analyses on Acid-Fast Bacilli (AFB) microscopy data and EQA reading results collected between the first quarter of 2011 and the fourth quarter of 2013. Descriptive analyses were conducted to examine the overview of microscopy laboratories activities, EQA results, and laboratory performance. Result: Of the 123,874 smears examined between 2011 and 2013, 11,522 (9.30%) were re-checked by the EQA system. The population TB screening rate rose from 0.46% in 2011 to 0.57% in 2013, and the case positivity rate decreased from 6.98% to 4.80%. The regional EQA results showed a reduction in high false-positive, high false-negative, and low false-negative errors. False-positive errors had decreased from 0.13% in 2011 to 0.07% in 2013, and false-negative errors from 0.91% in 2011 to 0.15% in 2013. Regional sensitivity of smear microscopy, when compared to re-checking controller, increased from 88.2% in 2011 to 97.2% in 2013. The regional specificity level remained relatively stable at above 99%.Conclusion: Our study found that a decreasing trend of case positivity rate from 2011 to 2013 in Sughd, though the overall laboratory workload was on the rise. In addition, EQA results showed an overall error reduction and an improved sensitivity of smear microscopy in the region. The overview of microscopic laboratory activities and the actual evaluation of the EQA system on sputum smear microscopy complement each other in providing a better picture on the progress of TB laboratory strengthening. We recommend similar approaches to be adapted by future evaluations on TB microscopic laboratories, particularly among countries of high burden. Interactive training and feedback loops are crucial to improving TB surveillance in Tajikistan.

scholarly journals Spanish society of laboratory medicine external quality assurance programmes: evolution of the analytical performance of clinical laboratories over 30 years and comparison with other programmes

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Carmen Perich ◽  
Carmen Ricós ◽  
Fernando Marqués ◽  
Joana Minchinela ◽  
Angel Salas ◽  
...  
Keyword(s):  
Quality Assurance ◽  
State Of The Art ◽  
Laboratory Medicine ◽  
Analytical Performance ◽  
External Quality Assurance ◽  
Biological Variability ◽  
External Quality ◽  
Spanish Society ◽  
Clinical Laboratories ◽  
Quality Specifications

AbstractThe purpose of this study is to understand the evolution of the analytical performance of the laboratories participating in the Spanish society of laboratory medicine (SEQCML) external quality assurance (EQA) programmes during its 30 years of operation and to compare it with the performance of other EQA programmes to establish whether the results are similar. The results obtained during this period are evaluated by applying the biological variability (BV) and state of the art-derived quality specifications. In addition, the results are compared with those obtained by other EQA programme organisations. It is noted that the laboratories participating in the EQA–SEQCML programmes have improved their performance over 30 years of experience and that the specifications derived from biological variation are achievable. It is difficult to compare EQA programmes, due to lack of accessibility and the differences in the design of these programmes (control materials, calculations used and analytical specifications established). The data from this study show that for some biological magnitudes the results obtained by the programmes are not yet harmonised, although efforts are being made to achieve this. Organisers of EQA programmes should also join the harmonisation effort by providing information on their results to enable comparison.

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