Possible reasons for abnormal pap lsil, no hpv? could yeast infection be the cause?

Low risk viral type: Most commercially available hpv dna tests diagnose 12 or 13 strains of 'high risk' hpv. These are strains most likely to cause cancer. It is possible to have lsil (hpv changes) in a pap where abnormal cells are present but the viral strain causing the warty changes is not one of the 12 or 13 types in the test kit being used. Low risk viral types (6 ; 11) cause warts but have negative dna tests.