A Quality Assurance Scheme for Prenatal Detection of Aneuploidy Based on Developing Chimeric Quality-Control Cells

2020 ◽  
Vol 66 (09/2020) ◽  
Author(s):  
Bing-Huan Weng ◽  
Dan-Hua Zhu ◽  
Xiao-Yun Shen ◽  
Xiao-Peng Yu ◽  
Jun Ying ◽  
...  
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Prenatal Detection ◽  
Assurance Scheme ◽  
Quality Assurance Scheme

Water virology external quality assurance scheme: experiences over four years

1997 ◽  
Vol 35 (11-12) ◽  
pp. 471-473
Author(s):  
J. Sellwood ◽  
J. Shore
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
External Quality Assurance ◽  
Recreational Water ◽  
External Quality ◽  
Wide Range ◽  
Virus Recovery ◽  
Assurance Scheme ◽  
Quality Assurance Scheme ◽  
Stringent Quality

The Water Virology External Quality Assurance (EQA) Scheme has distributed samples containing enterovirus to the specialised virus laboratories in Britain which analyse recreational water. Duplicate samples were either assayed for direct virus count or added to 101 of water, concentrated to 10ml and then assayed for virus counts. Although similar counts were obtained in different laboratories on direct assays, a wide range of virus counts was reported after water processing. However, robust attention to method detail and stringent quality control has been shown to improve the consistency of virus recovery rates. The results of tests for enterovirus in recreational water can then be used with confidence.

External Quality Control for Water Virology: Is It Feasible, Is It Worthwhile?

1993 ◽  
Vol 27 (3-4) ◽  
pp. 27-30
Author(s):  
J. Sellwood ◽  
J. McDermott
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Pilot Study ◽  
Test Methods ◽  
External Quality Control ◽  
External Quality ◽  
Water And Wastewater ◽  
Assurance Scheme ◽  
Quality Assurance Scheme

A pilot Study by eight UK laboratories demonstrated the feasibility and the value of a quality assurance scheme for virological testing of water and wastewater. However it also highlighted basic disadvantages of the test methods used.

scholarly journals Improving the Quality of Near-Patient Blood Glucose Measurement

1997 ◽  
Vol 34 (3) ◽  
pp. 281-286 ◽  
Author(s):  
A G Rumley
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Blood Glucose ◽  
Blood Glucose Measurement ◽  
Glucose Measurement ◽  
Training Quality ◽  
Control Procedures ◽  
Assurance Scheme ◽  
Quality Assurance Scheme

The quality of near-patient blood glucose measurement was audited in our hospitals in 1990, when a diversity of glucose meters were in use, by sending three samples of unknown (to the meter user) concentration to each user and collecting and analysing the results produced. The overall performance was unsatisfactory with a mean coefficient of variation (CV) of 23·5%. A scheme involving training, quality control and external quality assurance was introduced in 1993 based on the Bayer Glucometer II meter. This meter was used exclusively throughout our hospitals. Data from the quality assurance scheme showed that the overall CV fell initially to 14–16% and then settled at about 10–12% for the following 2 years. Unacceptable results (those more than two standard deviations from the mean) were 8–12% of the total. A new meter was introduced in 1995 (the Bayer Glucometer 4) which had the advantages of ‘no-wipe’ and automatic timing technology and in the subsequent year overall CV fell to 5–6% and has remained at this level. The frequency of unacceptable results fell to 5–7%. The improved precision figures encouraged us to change criteria for acceptability to mean ±15%. Using these criteria the level of unacceptable results is now 1–2%. This study shows that introducing training, quality control procedures, a quality assurance scheme and improved meter technology all backed by laboratory expertise can produce significant improvement in the quality of near patient blood glucose measurement.

"Delfia" and "Amerlite": two sensitive nonisotopic immunoassay systems for assay of thyrotropin compared.

1987 ◽  
Vol 33 (8) ◽  
pp. 1421-1424 ◽  
Author(s):  
A J Parnham ◽  
I F Tarbit
Keyword(s):  
Quality Assurance ◽  
Reference Interval ◽  
Regression Equation ◽  
Negative Bias ◽  
Nonthyroidal Illness ◽  
Time Resolved ◽  
Standard Curve ◽  
Wide Range ◽  
Assurance Scheme ◽  
Quality Assurance Scheme

Abstract We assessed the LKB "Delfia" (time-resolved dissociation-enhanced lanthanide fluoroimmunoassay) and the Amersham "Amerlite" (enhanced luminescent immunometry) assays of thyrotropin in serum. Both assays are sensitive (respective detection limits: 0.02 and 0.04 milli-int. unit/L) and have very good within- and between-batch precision over a wide range of thyrotropin concentrations. Results by the two methods correlate well (r = 0.992); the regression equation is: Amerlite = 0.915 Delfia - 0.33 milli-int. unit/L. The standard curve for the Delfia assay was linear, but that for the Amerlite assay showed some deviation from linearity below 0.5 milli-int. unit/L. Both assays have a negative bias in comparison with radiolabeled immunoradiometric assays, as judged by results for samples from the Quality Assurance Scheme. Both assays discriminate well between hyper-, hypo-, and euthyroid subjects, and results for thyrotropin for most patients with nonthyroidal illness were within the euthyroid reference interval. Both assays are convenient to perform and are based on systems that provide a viable alternative to radioimmunoassay.

scholarly journals Results of the First Italian External Quality Assurance Scheme for Somatic EGFR Mutation Testing in Non–Small-Cell Lung Cancer

2013 ◽  
Vol 8 (6) ◽  
pp. 773-778 ◽  
Author(s):  
Nicola Normanno ◽  
Carmine Pinto ◽  
GianLuigi Taddei ◽  
Marcello Gambacorta ◽  
Francesca Castiglione ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Quality Assurance ◽  
Small Cell Lung Cancer ◽  
Egfr Mutation ◽  
Small Cell ◽  
Small Cell Lung ◽  
External Quality ◽  
Assurance Scheme ◽  
Quality Assurance Scheme ◽  
Egfr Mutation Testing

scholarly journals Pilot Experience with an External Quality Assurance Scheme for Acylcarnitines in Plasma/Serum

2016 ◽  
pp. 23-31
Author(s):  
P. Ruiz Sala ◽  
G. Ruijter ◽  
C. Acquaviva ◽  
A. Chabli ◽  
M. G. M. de Sain-van der Velden ◽  
...  
Keyword(s):  
Quality Assurance ◽  
External Quality Assurance ◽  
External Quality ◽  
Pilot Experience ◽  
Assurance Scheme ◽  
Quality Assurance Scheme
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