Article in Vox Sanguinis titled, Non-A, Non-B Hepatitis and the Anti-HCV Assay by John Barbara and Marcela Contreras, 1991; 60; 1-7. Discussion of first generation anti-HCV assay, efficacy/predictive value, prevalence of HCV, supplementary tests, modes of transmission and limitations of the current assay. Contains a figure which explains the supplementary test process.