Dr. van Haeringen Laboratorium B.V.

H438 Polycythemia


Primary polycythemia is classified as a syndrome with a chronic hematocrit elevation with low circulating erythropoietin (EPO) levels, consequently leading to an abnormal volume of red blood cells in the blood. The frequency of Polycythemia in dogs is unknown and probably underestimated because it is often associated with nonspecific symptoms that can be attributed to various diseases.

Test specific information



The genetic factor is continuously present, and will always be visible.

Turn Around Time

The turn-around-time of a test depends to a large extent on the logistics of sample transportation to the laboratory. After receiving the sample at the test location, you can normally expect the result within 10 working days. A longer delivery time applies to tests carried out by a Partner Lab.

Location of disease or trait

This disease affects the composition of the blood, consequently influencing the coagulation of blood.

Breed dependence

For this test samples from all breeds are accepted.

Sample type

For this DNA test we accept the following materials: Blood EDTA, Blood Heparin. Please contact Dr. Van Haeringen Laboratorium if you wish to submit other material as listed.


Somatic mutations will not be inherited to successive generations.


The analysed mutation in the canine JAK2 gene occurs as acquired somatic mutation in a single hematopoietic stem cell leading to clonal hematopoiesis. On the molecular level the mutation results in a constitutive activation of the Janus Kinase 2 (Tyrosine Kinase) and cytokine hypersensitivity which are responsible for the polycythemia. In humans, the identical mutation was identified in 90% of patients with polycythemia vera. Heterozygousity for this mutation is sufficient to produce the clinical picture of polycythemia, suggesting a dominant effect of the mutation.

Severity of Disease


Code H438


€ 47,80 (Incl. 21% VAT)
€ 39,50 (Excl. VAT)