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Clinical Pathology Laboratory - Available Test
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Centesis Fluid Cytology Report
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| An example of our centesis fluid report is indicated below. For
all centesis fluids, we perform the following: |
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Visual assessment: Color, turbidity, volume.
Cell counts: This includes both red and white blood
cell counts. This is done manually using our bench top impedance
counter, the Coulter Z2. Results are reported out as thousands
of cells/µL.
Total protein: This is measured by refractometer.
Cytologic evaluation: The type of smear made depends
on the cellularity of the fluid.
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Photomicrograph of a peritoneal effusion in a dog with pancreatitis.
There is a sterile peritonitis characterized by large numbers of
non-degenerate neutrophils (black arrows) with fewer leukophagocytic
macrophages (red arrowheads). |
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| Centesis fluids are generally stable for up to 24 hours after collection,
if refrigerated. Some changes will occur in vitro, such as phagocytosis
of erythrocytes and bacteria. This complicates result interpretation,
so freshly made smears (direct or sediment) should be provided with
the fluid when sample submission is delayed. If this is done, please
specify the type of smear made, i.e. direct or sediment, on the request
form. If a sediment smear is made, leave at least 1 ml of fluid uncentrifuged,
in order to allow us to perform accurate cell counts. |
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