Log values of Stanford genotype scores plotted to log values of Monogram phenotypic fold change, illustrating genotypic and phenotypic correlations for ETR (A), RPV (B), and TDF (C). The circled areas indicate samples that were misclassified as genotypically resistant, although they displayed susceptibility to TDF, ETR, and RPV upon phenotyping. Abbreviations: ETR, etravirine; RPV, rilpivirine; TDF, tenofovir.