Peer-reviewed veterinary case report
How well does the CoaguChek-XS test blood clotting time in dogs
By Kelmer, Efrat et al.·Published in Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001)·2014·Department of Small Animal Emergency and Critical Care·View original on PubMed →
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Original publication title: Assessment of a portable prothrombin time analyzer (CoaguChek-XS) in dogs.
- Species:
- dog
Plain-English summary
A study evaluated a portable blood test called CoaguChek-XS that measures prothrombin time (PT) in dogs, which helps assess blood clotting. The test was found to be easy to use and provided quick results, making it a useful tool for screening dogs. It accurately identified dogs with anticoagulant rodenticide poisoning but was less reliable in anemic dogs. While the CoaguChek-XS showed moderate agreement with a standard blood analyzer, it’s important for vets to confirm results if the PT is prolonged or if the dog is anemic.
People also search for: dog blood test for clotting · CoaguChek-XS for dogs · dog anticoagulant poisoning symptoms
Abstract
OBJECTIVES: To assess the performance of a portable prothrombin time (PT) analyzer (CoaguChek-XS) in dogs. ANIMALS: Ninety-seven dogs composed of 20 healthy dogs, 45 ill dogs, and 32 ill dogs with altered coagulation. PROCEDURES: Samples were concurrently obtained and PT was measured using the CoaguChek-XS and an automated coagulation analyzer. Agreement between methods was assessed using Spearman's correlation and Bland-Altman analysis. RESULTS: The reference interval for PT using the CoaguChek-XS was 9.6-11.5 s. The CoaguChek-XS was easy to use, required a small volume of whole blood, and gave results within 1 min. The mean difference in PT between the 2 methods was 2.58 s (SD 3.10), and 94% of the samples fell within limits of agreement. The correlation was moderate, but significant (r = 0.35, P < 0.001). Sensitivity and specificity of the CoaguCheck-XS PT compared to analyzer PT were 92% and 56%, respectively, and increased to 95% and 77% on intent to treat basis. The coefficient of variance was 0.72%. The CoaguChek-XS identified all 8 dogs with anticoagulant rodenticide intoxication, although a discrepancy was noted from the analyzer results. In anemic dogs (PCV≤25%), the CoaguChek-XS did not display accurate results. CONCLUSIONS: The CoaguChek-XS is a simple, user-friendly, highly precise PT analyzer. Results had moderate correlation and good agreement with a standard method. It can be used reliably for screening dogs when the PT is normal. However, when the CoaguChek-XS PT is prolonged or when the PCV is ≤25%, results should be confirmed using a standard method.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/25039332/