The heart of the ThinPrep® System is the
ThinPrep 2000 Processor, an automated slide preparation unit that produces
remarkably uniform
thin-layer slides, virtually free of obscuring artifacts such as blood,
mucous and inflammation.
Step 1
A gynecologic sample is collected using a broom-type or cytobrush/spatula
cervical sampling device.
Step 2
Instead of smearing the cells on a slide, the sampling device is rinsed
into a ThinPrep vial containing PreservCyt® transport medium. The
device is then discarded.
Step 3
The sample vial is capped, labeled, and sent to the laboratory for
slide preparation.
Step 4
At the laboratory, the vial is placed into the ThinPrep 2000 Processor. First,
a gentle dispersion step breaks up blood, mucous, non-diagnostic debris, and
then thoroughly mixes the sample. A negative pressure pulse is generated which
draws fluid through a ThinPrep Filter that collects a thin, even layer of diagnostic
cellular material. The ThinPrep 2000 Processor constantly monitors the rate
of flow through the ThinPrep Filter during the collection process to prevent
the cellular presentation from being too scant or too dense. The cellular material
is then transferred to a glass slide and fixed.
ThinPrep slides are stained and evaluated by laboratory personnel using
criteria similar to the conventional pap smear. What is different is
the marked improvement in clarity and specimen adequacy achieved with
the ThinPrep System.