The APTIMA HPV 16 18/45 Genotype Assay (AHPV-GT Assay) is an in vitro nucleic acid amplification test for the qualitative detection of E6/E7 viral messenger RNA (mRNA) of human papillomavirus (HPV) types 16, 18 and 45 in cervical specimens from women with positive results in the APTIMA HPV Assay. The AHPV-GT Assay can differentiate between samples positive for HPV 16 from those positive for HPV 18 and/or 45, but does not differentiate between HPV 18-positive samples and HPV 45-positive samples. Cervical specimens collected in ThinPrep Pap Test vials containing PreservCyt Solution (Hologic, Inc., Marlborough, Massachusetts) with commercially available collection devices (broom-type collection device or cytobrush/spatula combination) may be tested with the AHPV-GT Assay either pre- or post-Pap processing. The assay is used with the TIGRIS DTS (TIGRIS) System.