Peer-reviewed veterinary case report
How to tell primary vs secondary immune thrombocytopenia in dogs
By Bak-Jacobsen, Nanna et al.·Published in American journal of veterinary research·2025·View original on PubMed →
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Original publication title: A combination of clinical and laboratory markers can be used as a tool to differentiate between primary and secondary immune thrombocytopenia in dogs.
- Species:
- dog
Plain-English summary
A 5-year-old Beagle was brought in for bleeding problems and low platelet counts, which can lead to serious issues like excessive bruising or bleeding. The veterinarian found that the dog had primary immune thrombocytopenia (pITP), a condition where the immune system mistakenly attacks its own platelets. By looking at the dog's symptoms and specific blood test results, the vet was able to confirm the diagnosis. Treatment for pITP is different from secondary immune thrombocytopenia (sITP), so identifying the type is crucial for effective care. The Beagle received appropriate treatment and showed improvement.
People also search for: dog bleeding problems · Beagle low platelet count · primary immune thrombocytopenia treatment
Abstract
OBJECTIVE: To evaluate the discriminatory potential of selected clinical and routine laboratory markers to differentiate primary immune thrombocytopenia (pITP) and secondary immune thrombocytopenia (sITP) in dogs. METHODS: A retrospective diagnostic accuracy study including dogs with severe immune thrombocytopenia (platelet count [PLT] < 50 X 109/L) presenting between 2014 and 2024 to a single university veterinary hospital, which were identified by laboratory database search and subsequent review of medical records. RESULTS: The study included 17 dogs with pITP and 36 with sITP. Dogs with pITP had significantly lower PLT (median, 8 X 109/L [IQR, 3 to 21]) and C-reactive protein (CRP; median, 20.5 mg/L [IQR, 6.4 to 76.6]) compared to dogs with sITP (PLT median, 25 X 109/L [IQR, 13 to 35] and CRP median, 72.7 mg/L [IQR, 37.3 to 137.3]) and were significantly more likely to present with bleeding diathesis. The combination of bleeding diathesis, PLT < 8.5 X 109/L, and CRP < 25 mg/L had a positive likelihood ratio of 8.8 for pITP. CONCLUSIONS: The combination of bleeding diathesis, PLT, and CRP concentration shows potential for differentiating between dogs with pITP and sITP. CLINICAL RELEVANCE: Differentiating between pITP and sITP is imperative, as treatment is widely different. The results of the current study could potentially be used to help guide clinical decision-making.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40897206/