Department of Microbiology and Infectious Diseases, The Royal Women's Hospital, 132 Grattan Street, Carlton, Victoria 3053, Australia. sepehr.tabrizi@rch.org.au
Specimen-to-specimen carryover during ThinPrep slide preparation was evaluated by comparing human papillomavirus genotypes detected prior and subsequent to the ThinPrep processing of 121 PreservCyt samples. Overall, 52 samples generated concordant genotypes and 38 had additional and 21 had fewer genotypes postprocessing. PreservCyt samples should be aliquoted for PCR testing prior to ThinPrep processing.