Cardiac troponin I (cTnI) is a polypeptide found specifically in cardiac muscle tissue that has been used as a diagnostic and prognostic indicator of cardiomyopathy. Increases in cTnI are associated with myocardial pathologic processes. However, high serum cTnI concentrations have been observed in normal Greyhounds.
We hypothesized that Greyhounds have cTnI concentrations higher than non-Greyhound dogs, and that a separate reference range should be established for Greyhounds.
LaVecchio, D., Marin, L.M., Baumwart, R., Iazbik, M.C., Westendorf, N. and Couto, C.G. (2009), Serum Cardiac Troponin I Concentration in Retired Racing Greyhounds. Journal of Veterinary Internal Medicine, 23: 87-90. https://doi.org/10.1111/j.1939-1676.2008.0237.x