Hepatozoon canis infection causing a strong monocytosis with intra-monocytic gamonts and leading to erroneous leukocyte determinations.

In this case report, a Swedish flat-coated retriever was diagnosed with an extensive Hepatozoon canis infection. The dog had a prominent monocytosis (14.0 × 10 /L) with H canis gamonts detected in most monocytes, but none were found in the neutrophils.

Feline Differential Leukocyte Count with ProCyte Dx: Frequency and Severity of a Neutrophil-Lymphocyte Error and How to Avoid It.

Background: Erroneous neutrophil and lymphocyte counts from analysis of feline blood samples were transferred directly into the hospital information system from the ProCyte Dx hematology instrument in our after-hours laboratory. Errors usually were not detected by the users.

Hypothesis/objectives: To quantify the frequency and severity of errors associated with the ProCyte Dx analyzer and to identify methods to avoid the errors.