Volume 10, Number 12, December 2004

SARS Molecular Detection External Quality Assurance

Christian Drosten,* Hans Wilhelm Doerr,† Wilina Lim,‡ Klaus Stöhr,§ and Matthias Niedrig¶
*Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany; †University of Frankfurt, Frankfurt, Germany; ‡Government Virus Unit Hong Kong, Hong Kong, China; §World Health Organization, Geneva, Switzerland; and ¶Robert Koch Institute, Berlin, Germany

Figure. Probit analysis of the fractions of laboratories achieving a positive result (y-axis) in relation to the virus RNA concentration in a given positive sample (x-axis). Data points represent individual samples in proficiency test panel. The thick line is the regression line calculated on the basis of a probit model (dose-response curve); the thin lines are 95% confidence intervals. Data fit into the model with p < 0.0001.

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This page last reviewed October 27, 2004

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