Figure 2.

The platelet count and antiplatelet antibodies (shown as percent APA) at multiple recheck time points during study enrollment in 4 (4/4) client‐owned dogs that did not demonstrate a response to treatment and were diagnosed with idiopathic/primary immune thrombocytopenia (ITP). Response to treatment was defined as the platelet count returned ≥200 000 platelets/μL within 4 weeks of initial diagnosis. A percent APA ≤10% is considered negative. A, Dog that remained positive but was lost to follow‐up due to pet relinquishment. B, Dog that remained positive for >8 weeks following initial diagnosis. C, Dog that was intermittently positive during the study period. D, Dog that became quickly negative and remained negative throughout the study period