Comparison of positive and negative results by the Hybrid Capture assay and line blot assay for samples infected with different HPV types. The Hybrid Capture assay probe A cocktail contains HPV types 6, 11, 42, 43, and 44 and the probe B cocktail contains HPV types 16, 18, 31, 33, 35, 45, 51, 52, and 56. For a sample to have concordant results by both assays, the type detected (or not detected) by the line blot assay had to be the one included in the probe cocktail and vice versa. All other samples were considered to have discrepant results. The HPV types that may account for the Hybrid Capture assay-positive, line blot assay-negative samples with discrepant results are shown.