Smears are unsatisfactory for examination for any of several reasons.
Bloody samples may clog the filter when the ThinPrep slide is prepared in the laboratory, resulting in an insufficient number of epithelial cells on the slide. Improper or NOT labeling the PreservCyt vial. Failure to properly rinse the collection devices in the vial of PreservCyt solution. Illegible writing on the vial. Name on the vial and name on the form do not match.