Robust Prediction of the MASCOT Score for an Improved Quality Assessment in Mass Spectrometric Proteomics

2008 ◽  
Vol 7 (9) ◽  
pp. 3708-3717 ◽  
Author(s):  
Thomas Koenig ◽  
Bjoern H. Menze ◽  
Marc Kirchner ◽  
Flavio Monigatti ◽  
Kenneth C. Parker ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Mass Spectrometric ◽  
Mascot Score ◽  
Robust Prediction

scholarly journals External Quality Assessment of Methylmalonic Acid and Total Homocysteine

1999 ◽  
Vol 45 (9) ◽  
pp. 1536-1542 ◽  
Author(s):  
Jan Møller ◽  
Karsten Rasmussen ◽  
Lene Christensen
Keyword(s):  
Gas Chromatography ◽  
Quality Assessment ◽  
Methylmalonic Acid ◽  
External Quality Assessment ◽  
Mass Spectrometric ◽  
External Quality ◽  
Laboratory Component ◽  
Edta Plasma ◽  
Total Homocysteine ◽  
Minimum Quality

Abstract Background: The use of analyses for methylmalonic acid (MMA) and total homocysteine (HCY) in plasma has become widespread. Realizing the need for external quality assessment for these measurements, we started a program in 1997. The results for 1998 are reviewed in this report. Methods: Fourteen laboratories participated with 15 sets of results for MMA, and 28 laboratories participated with 34 sets of results for HCY. Results for four identical samples, made up from the same unmodified serum (MMA) or EDTA-plasma (HCY) pool, sent out under different identifications, were used for assessing the imprecision. Samples made up from the same pools supplemented with MMA or l-HCY to three concentrations were used for assessing the recovery. By using literature data for the biological variation, quality goals for both analytes were calculated. Results: The overall within-laboratory CV was 12% for MMA and 7.5% for HCY. Gas chromatography–mass spectrometric HCY results had lower imprecision than the HPLC or immunoassay results. For MMA, no significant between-laboratory component of variance was found. Only results for HCY obtained with HPLC methods showed significant between-laboratory variance. Conclusions: Eight of the 15 participants achieved the minimum imprecision goal for MMA vs 9 of the 34 participants for HCY. The minimum quality goals for bias as approximated by the recovery were achieved by 13 participants for MMA and 26 for HCY.

Mass-spectrometric determination of serum cortisol: comparison of data from two independent laboratories.

1986 ◽  
Vol 32 (3) ◽  
pp. 536-538 ◽  
Author(s):  
S J Gaskell ◽  
L Sieckmann
Keyword(s):  
Mass Spectrometry ◽  
Quality Assessment ◽  
Isotope Dilution ◽  
External Quality Assessment ◽  
Serum Cortisol ◽  
Mass Spectrometric ◽  
External Quality ◽  
Mass Spectrometric Determination

Abstract Isotope dilution and mass spectrometry were used in two independent laboratories to determine cortisol in 15 plasma and serum pools used in the British and German national schemes for the external quality assessment of routine assays. For the concentration range 240-700 nmol/L, differences between the data obtained by the two laboratories were generally less than 4% but were approximately 7% in two instances. The discrepancies are nevertheless small in comparison with the bias observed for many routine assays.

A quality assessment system: the search for validity

1989 ◽  
Vol 53 (11) ◽  
pp. 658-669 ◽  
Author(s):  
MH Schoen
Keyword(s):  
Quality Assessment ◽  
Assessment System

Amalgam marginal quality assessment: a comparison of seven methods

1997 ◽  
Vol 24 (7) ◽  
pp. 496-505 ◽  
Author(s):  
E. S. GROSSMAN ◽  
J. M. MATEJKA
Keyword(s):  
Quality Assessment

CO 2 laser cutting of Incoloy 800 HT alloy and its quality assessment

2002 ◽  
Vol 12 (2) ◽  
pp. 135-145 ◽  
Author(s):  
B.S. Yilbas ◽  
M. Rashid
Keyword(s):  
Quality Assessment ◽  
Laser Cutting ◽  
Incoloy 800

Are Psychologists Ready for Quality Assessment?

PsycCRITIQUES ◽  
2006 ◽  
Vol 51 (14) ◽  
Author(s):  
Howard N. Garb
Keyword(s):  
Quality Assessment

Clinical Music Study Quality Assessment Scale

2018 ◽  
Author(s):  
Artur Jaschke ◽  
Laura H. P. Eggermont ◽  
Sylka Uhlig ◽  
Erik J. A. Scherder
Keyword(s):  
Quality Assessment ◽  
Assessment Scale ◽  
Study Quality ◽  
Music Study ◽  
Study Quality Assessment
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