Skip to main content

Table 3 Samples with discordant HPV test results (HPV positive, HPV negative, failed) between the four laboratories

From: Quality assurance of human papillomavirus (HPV) testing in the implementation of HPV primary screening in Norway: an inter-laboratory reproducibility study

Cytological finding Lab A Lab B Lab C Lab D  
Unsatisfactory failed negative negative negative *
 NILM failed negative negative negative *
 NILM failed negative failed negative *
 NILM negative failed negative negative *
 NILM negative failed negative negative *
 NILM negative failed negative negative *
 NILM negative failed negative negative *
 NILM negative failed negative negative *
 ASCUS positive positive failed positive *
 LSIL positive failed positive positive *
 LSIL positive failed positive positive *
 LSIL positive positive failed positive *
Unsatisfactory negative positive negative negative **
 NILM failed failed negative positive **
 NILM positive negative negative negative **
 NILM positive positive negative negative **
 NILM positive positive positive negative **
 NILM negative positive negative negative **
 NILM negative positive negative positive **
 NILM negative negative negative positive **
 NILM negative negative negative positive **
 ASCUS negative positive negative negative **
  1. *Samples for which at least one laboratory reported a failed result, and the women would be recalled to take a new call sample from the cervix
  2. ** True discordant samples; would lead to different clinical follow-up procedures
  3. NILM negative for intraepithelial lesion or malignancy, ASC-US atypical squamous cells of undetermined significance, LSIL low-grade squamous intraepithelial lesion