Volume 19, Number 5—May 2013
Research
World Health Organization International Standard to Harmonize Assays for Detection of Hepatitis E Virus RNA
Figure 1

Figure 1. . . Histograms showing results for quantitative and qualitative assays conducted by 23 laboratories for the determination of the hepatitis E virus (HEV) RNA content of sample 1 (A), sample 2 (B), sample 3 (C), and sample 4 (D). White indicates quantitative assays (log10 copies/mL); gray indicates qualitative assays (log10 nucleic acid amplification technique (NAT)–detectable units/mL). Number of laboratories is indicated on the vertical axis. Laboratory code numbers are indicated in the respective boxes.
1Members of the HEV Collaborative Study Group are listed at the end of this article.
2In memory of Thomas Laue.