What is the ThinPrep Papanicolaou (Pap) test?

Updated: Feb 12, 2019
  • Author: Cecelia H Boardman, MD; Chief Editor: Warner K Huh, MD  more...
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Test samples for the ThinPrep Pap test are collected the same way as those for the conventional Pap test. However, the specimen is placed in a preservative solution rather than on a slide. An automated processor prepares the sample and makes a uniform slide for review. Mucus and blood are removed in the process. The ThinPrep Papanicolaou test was approved in 1996 by the US Food and Drug Administration (FDA) as an alternative to the traditional conventional smear.

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